Re: [mailop] How do I break Gmail forwarding?
Le Mon, Oct 24, 2022 at 09:30:29AM -0400, Tara Natanson via mailop [mailop@mailop.org] a écrit: > Yes I know the address @gmail the messages are being sent to. I do not > control that gmail inbox though. So get in touch with whoever control it, to disable the forward. And filter until it's done ... -- Dominique Rousseau Neuronnexion, Prestataire Internet & Intranet 6 rue des Hautes cornes - 8 Amiens tel: 03 22 71 61 90 - fax: 03 22 71 61 99 - http://www.neuronnexion.coop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
Brandon, Thank you for the well balanced response. That makes perfect sense. "I'm sure there's improvements that could be made, but priorities are what they are." Hmm, the obvious choice would be an unsub link in the message, but that > would break DKIM. I guess one could add it as a header, but that will > seriously limit who would see it > > Probably the best would be a periodic reminder of the forward with the > undo link similar to what happens in the initial verification message. > > Also, it's not a heavy abuse vector since the receiver has to opt-in to > enabling the forward... I think that wasn't true very early on in Gmail, > but has been true for well over a decade at this point. > > The ultimate recourse is the same as any other unwanted mail, to block > it. With Gmail, you can set up filters to auto-delete the forwarded > messages. > It's not satisfying, and an abuser will just move on to some other route, > of course. The open nature of email makes fighting this level of high > touch low > volume abuse extremely challenging. > > A long time ago, we considered adding a "contact only" email option for > folks getting a lot of unwanted messages, and I know hey.com went really > deep > into that as well. There were a lot of concerns with unintended > consequences and being worried if the ecosystem would perceive this as a > step towards > Gmail closing the open nature of email. Ie, we know that one reason that > abusers will mailbomb an address is to make it more likely the recipient > misses > some other email notifications about account changes and such, so having > folks switch to contact only would make that easier for the scammer and > then > we start getting into trying to be magic about what gets in and what > doesn't, which folks will totally love. > > Anyways, as I said, I'm sure there's improvements that could be made, but > priorities are what they are. > > Brandon > > On Mon, Oct 24, 2022 at 12:06 PM Tara Natanson > wrote: > >> Brandon, >> >> Yes, I could setup a rule at our edge servers to trash the mail or bounce >> it. I was just wondering if there's some other way to break a google >> forward that I wasn't aware of. It is being used in an abusive way, the >> stuff we receive via that forward seems deliberate. I was hoping there was >> some way I could report that and make it stop, or some mechanism I had >> missed. I have access to the folks that can setup those mail rules. But >> it occurred to me that not every user does and what would the average end >> user do in this situation? >> >> This came to mind after a recent session at M3AAWG about the victims of >> cyber abuse and harassment. Lets say I allowed mail to forward to me, >> with my permission and then at some future point, that forwarded mail was >> being used to harass and abuse me. There's no unsub, no way to stop >> getting the mail if I don't control the original mailbox its being sent >> to. The end user has no recourse. I do, because I work closely with our >> mail admins on a daily basis but that is likely not the case with most >> users. >> >> Cheers! >> >> Tara Natanson >> >> >> On Mon, Oct 24, 2022 at 2:17 PM Brandon Long wrote: >> >>> I'm confused, I thought you were saying that a gmail account was >>> autoforwarding mail to your postmaster@ address (ie, with +caf_ in >>> envelope sender). >>> >>> In which case, you can set up a specific block for mail from that caf >>> address to your postmaster address. >>> >>> With Google Workspace, you can use a content match >>> https://support.google.com/a/answer/1346934 >>> >>> Inbound Messages >>> Advanced content match, Location Envelope sender, and then the email >>> address with the +caf in it, and Equals or contains match type >>> Reject Message >>> >>> Brandon >>> >>> >>> >>> On Mon, Oct 24, 2022 at 11:01 AM Tara Natanson >>> wrote: >>> Brandon, The forward is set up to send out our postmaster@ address, So I can't let it bounce. :( Tara On Mon, Oct 24, 2022 at 1:49 PM Brandon Long via mailop < mailop@mailop.org> wrote: > > > On Mon, Oct 24, 2022 at 9:09 AM Bill Cole via mailop < > mailop@mailop.org> wrote: > >> On 2022-10-24 at 09:30:29 UTC-0400 (Mon, 24 Oct 2022 09:30:29 -0400) >> Tara Natanson via mailop >> is rumored to have said: >> >> > Yes I know the address @gmail the messages are being sent to. I >> do not >> > control that gmail inbox though. >> >> Well, you surely understand that to be a (correct ethical) choice, >> right? You do control an inbox which GMail believes is confirmed as that >> GMail user, yes? >> >> >> But seriously, just give it a '550 5.7.1' reply at RCPT if possible, >> or '554 5.7.1' a
Re: [mailop] How do I break Gmail forwarding?
Hmm, the obvious choice would be an unsub link in the message, but that would break DKIM. I guess one could add it as a header, but that will seriously limit who would see it Probably the best would be a periodic reminder of the forward with the undo link similar to what happens in the initial verification message. Also, it's not a heavy abuse vector since the receiver has to opt-in to enabling the forward... I think that wasn't true very early on in Gmail, but has been true for well over a decade at this point. The ultimate recourse is the same as any other unwanted mail, to block it. With Gmail, you can set up filters to auto-delete the forwarded messages. It's not satisfying, and an abuser will just move on to some other route, of course. The open nature of email makes fighting this level of high touch low volume abuse extremely challenging. A long time ago, we considered adding a "contact only" email option for folks getting a lot of unwanted messages, and I know hey.com went really deep into that as well. There were a lot of concerns with unintended consequences and being worried if the ecosystem would perceive this as a step towards Gmail closing the open nature of email. Ie, we know that one reason that abusers will mailbomb an address is to make it more likely the recipient misses some other email notifications about account changes and such, so having folks switch to contact only would make that easier for the scammer and then we start getting into trying to be magic about what gets in and what doesn't, which folks will totally love. Anyways, as I said, I'm sure there's improvements that could be made, but priorities are what they are. Brandon On Mon, Oct 24, 2022 at 12:06 PM Tara Natanson wrote: > Brandon, > > Yes, I could setup a rule at our edge servers to trash the mail or bounce > it. I was just wondering if there's some other way to break a google > forward that I wasn't aware of. It is being used in an abusive way, the > stuff we receive via that forward seems deliberate. I was hoping there was > some way I could report that and make it stop, or some mechanism I had > missed. I have access to the folks that can setup those mail rules. But > it occurred to me that not every user does and what would the average end > user do in this situation? > > This came to mind after a recent session at M3AAWG about the victims of > cyber abuse and harassment. Lets say I allowed mail to forward to me, > with my permission and then at some future point, that forwarded mail was > being used to harass and abuse me. There's no unsub, no way to stop > getting the mail if I don't control the original mailbox its being sent > to. The end user has no recourse. I do, because I work closely with our > mail admins on a daily basis but that is likely not the case with most > users. > > Cheers! > > Tara Natanson > > > On Mon, Oct 24, 2022 at 2:17 PM Brandon Long wrote: > >> I'm confused, I thought you were saying that a gmail account was >> autoforwarding mail to your postmaster@ address (ie, with +caf_ in >> envelope sender). >> >> In which case, you can set up a specific block for mail from that caf >> address to your postmaster address. >> >> With Google Workspace, you can use a content match >> https://support.google.com/a/answer/1346934 >> >> Inbound Messages >> Advanced content match, Location Envelope sender, and then the email >> address with the +caf in it, and Equals or contains match type >> Reject Message >> >> Brandon >> >> >> >> On Mon, Oct 24, 2022 at 11:01 AM Tara Natanson >> wrote: >> >>> Brandon, >>> >>> The forward is set up to send out our postmaster@ address, So I can't >>> let it bounce. :( >>> >>> Tara >>> >>> >>> On Mon, Oct 24, 2022 at 1:49 PM Brandon Long via mailop < >>> mailop@mailop.org> wrote: >>> On Mon, Oct 24, 2022 at 9:09 AM Bill Cole via mailop wrote: > On 2022-10-24 at 09:30:29 UTC-0400 (Mon, 24 Oct 2022 09:30:29 -0400) > Tara Natanson via mailop > is rumored to have said: > > > Yes I know the address @gmail the messages are being sent to. I do > not > > control that gmail inbox though. > > Well, you surely understand that to be a (correct ethical) choice, > right? You do control an inbox which GMail believes is confirmed as that > GMail user, yes? > > > But seriously, just give it a '550 5.7.1' reply at RCPT if possible, > or '554 5.7.1' after DATA. Make Google figure it out. > autoforwards should be automatically disabled if they bounce, though like with all such things there are heuristics involved (a certain number of bounces in a given time). I'm sure there are a bunch of ways it could be improved, I think it disables it without warning the user, which isn't great (especially if you only read mail that's being forwarded), but it can probably be re-enabled without re-verifying the address as well, which isn't gr
Re: [mailop] How do I break Gmail forwarding?
Brandon, Yes, I could setup a rule at our edge servers to trash the mail or bounce it. I was just wondering if there's some other way to break a google forward that I wasn't aware of. It is being used in an abusive way, the stuff we receive via that forward seems deliberate. I was hoping there was some way I could report that and make it stop, or some mechanism I had missed. I have access to the folks that can setup those mail rules. But it occurred to me that not every user does and what would the average end user do in this situation? This came to mind after a recent session at M3AAWG about the victims of cyber abuse and harassment. Lets say I allowed mail to forward to me, with my permission and then at some future point, that forwarded mail was being used to harass and abuse me. There's no unsub, no way to stop getting the mail if I don't control the original mailbox its being sent to. The end user has no recourse. I do, because I work closely with our mail admins on a daily basis but that is likely not the case with most users. Cheers! Tara Natanson On Mon, Oct 24, 2022 at 2:17 PM Brandon Long wrote: > I'm confused, I thought you were saying that a gmail account was > autoforwarding mail to your postmaster@ address (ie, with +caf_ in > envelope sender). > > In which case, you can set up a specific block for mail from that caf > address to your postmaster address. > > With Google Workspace, you can use a content match > https://support.google.com/a/answer/1346934 > > Inbound Messages > Advanced content match, Location Envelope sender, and then the email > address with the +caf in it, and Equals or contains match type > Reject Message > > Brandon > > > > On Mon, Oct 24, 2022 at 11:01 AM Tara Natanson > wrote: > >> Brandon, >> >> The forward is set up to send out our postmaster@ address, So I can't >> let it bounce. :( >> >> Tara >> >> >> On Mon, Oct 24, 2022 at 1:49 PM Brandon Long via mailop < >> mailop@mailop.org> wrote: >> >>> >>> >>> On Mon, Oct 24, 2022 at 9:09 AM Bill Cole via mailop >>> wrote: >>> On 2022-10-24 at 09:30:29 UTC-0400 (Mon, 24 Oct 2022 09:30:29 -0400) Tara Natanson via mailop is rumored to have said: > Yes I know the address @gmail the messages are being sent to. I do not > control that gmail inbox though. Well, you surely understand that to be a (correct ethical) choice, right? You do control an inbox which GMail believes is confirmed as that GMail user, yes? But seriously, just give it a '550 5.7.1' reply at RCPT if possible, or '554 5.7.1' after DATA. Make Google figure it out. >>> >>> autoforwards should be automatically disabled if they bounce, though >>> like with all such things there are heuristics involved (a certain number >>> of bounces in a given time). >>> I'm sure there are a bunch of ways it could be improved, I think it >>> disables it without warning the user, which isn't great (especially if you >>> only read mail that's being forwarded), >>> but it can probably be re-enabled without re-verifying the address as >>> well, which isn't great for this case either. >>> >>> Brandon >>> ___ >>> mailop mailing list >>> mailop@mailop.org >>> https://list.mailop.org/listinfo/mailop >>> >> ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
On 10/24/22 12:01 PM, Tara Natanson via mailop wrote: The forward is set up to send out our postmaster@ address, So I can't let it bounce. :( I can respect that. I wonder if it would be possible to implement a conditional rejection that matches details of the problematic message. I would also wonder if it requires a real time rejection during the SMTP transaction with Google, or if a correctly formatted DSN would convey the necessary information. -- I would expect that it wouldn't be too much trouble to fabricate such a DSN for this white hat purpose. -- Grant. . . . unix || die smime.p7s Description: S/MIME Cryptographic Signature ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
I'm confused, I thought you were saying that a gmail account was autoforwarding mail to your postmaster@ address (ie, with +caf_ in envelope sender). In which case, you can set up a specific block for mail from that caf address to your postmaster address. With Google Workspace, you can use a content match https://support.google.com/a/answer/1346934 Inbound Messages Advanced content match, Location Envelope sender, and then the email address with the +caf in it, and Equals or contains match type Reject Message Brandon On Mon, Oct 24, 2022 at 11:01 AM Tara Natanson wrote: > Brandon, > > The forward is set up to send out our postmaster@ address, So I can't > let it bounce. :( > > Tara > > > On Mon, Oct 24, 2022 at 1:49 PM Brandon Long via mailop > wrote: > >> >> >> On Mon, Oct 24, 2022 at 9:09 AM Bill Cole via mailop >> wrote: >> >>> On 2022-10-24 at 09:30:29 UTC-0400 (Mon, 24 Oct 2022 09:30:29 -0400) >>> Tara Natanson via mailop >>> is rumored to have said: >>> >>> > Yes I know the address @gmail the messages are being sent to. I do >>> not >>> > control that gmail inbox though. >>> >>> Well, you surely understand that to be a (correct ethical) choice, >>> right? You do control an inbox which GMail believes is confirmed as that >>> GMail user, yes? >>> >>> >>> But seriously, just give it a '550 5.7.1' reply at RCPT if possible, or >>> '554 5.7.1' after DATA. Make Google figure it out. >>> >> >> autoforwards should be automatically disabled if they bounce, though like >> with all such things there are heuristics involved (a certain number of >> bounces in a given time). >> I'm sure there are a bunch of ways it could be improved, I think it >> disables it without warning the user, which isn't great (especially if you >> only read mail that's being forwarded), >> but it can probably be re-enabled without re-verifying the address as >> well, which isn't great for this case either. >> >> Brandon >> ___ >> mailop mailing list >> mailop@mailop.org >> https://list.mailop.org/listinfo/mailop >> > ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
Brandon, The forward is set up to send out our postmaster@ address, So I can't let it bounce. :( Tara On Mon, Oct 24, 2022 at 1:49 PM Brandon Long via mailop wrote: > > > On Mon, Oct 24, 2022 at 9:09 AM Bill Cole via mailop > wrote: > >> On 2022-10-24 at 09:30:29 UTC-0400 (Mon, 24 Oct 2022 09:30:29 -0400) >> Tara Natanson via mailop >> is rumored to have said: >> >> > Yes I know the address @gmail the messages are being sent to. I do not >> > control that gmail inbox though. >> >> Well, you surely understand that to be a (correct ethical) choice, right? >> You do control an inbox which GMail believes is confirmed as that GMail >> user, yes? >> >> >> But seriously, just give it a '550 5.7.1' reply at RCPT if possible, or >> '554 5.7.1' after DATA. Make Google figure it out. >> > > autoforwards should be automatically disabled if they bounce, though like > with all such things there are heuristics involved (a certain number of > bounces in a given time). > I'm sure there are a bunch of ways it could be improved, I think it > disables it without warning the user, which isn't great (especially if you > only read mail that's being forwarded), > but it can probably be re-enabled without re-verifying the address as > well, which isn't great for this case either. > > Brandon > ___ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop > ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
On Mon, Oct 24, 2022 at 9:09 AM Bill Cole via mailop wrote: > On 2022-10-24 at 09:30:29 UTC-0400 (Mon, 24 Oct 2022 09:30:29 -0400) > Tara Natanson via mailop > is rumored to have said: > > > Yes I know the address @gmail the messages are being sent to. I do not > > control that gmail inbox though. > > Well, you surely understand that to be a (correct ethical) choice, right? > You do control an inbox which GMail believes is confirmed as that GMail > user, yes? > > > But seriously, just give it a '550 5.7.1' reply at RCPT if possible, or > '554 5.7.1' after DATA. Make Google figure it out. > autoforwards should be automatically disabled if they bounce, though like with all such things there are heuristics involved (a certain number of bounces in a given time). I'm sure there are a bunch of ways it could be improved, I think it disables it without warning the user, which isn't great (especially if you only read mail that's being forwarded), but it can probably be re-enabled without re-verifying the address as well, which isn't great for this case either. Brandon ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
On 2022-10-24 at 09:30:29 UTC-0400 (Mon, 24 Oct 2022 09:30:29 -0400) Tara Natanson via mailop is rumored to have said: > Yes I know the address @gmail the messages are being sent to. I do not > control that gmail inbox though. Well, you surely understand that to be a (correct ethical) choice, right? You do control an inbox which GMail believes is confirmed as that GMail user, yes? But seriously, just give it a '550 5.7.1' reply at RCPT if possible, or '554 5.7.1' after DATA. Make Google figure it out. > > Tara > > On Mon, Oct 24, 2022 at 9:23 AM Sebastian Nielsen via mailop < > mailop@mailop.org> wrote: > >> Does the MAIL FROM (Sender header) contain the gmail address? >> >> Does the MIME From contain the gmail address? >> >> >> >> Check the headers if the gmail address is SOMEWHERE there. >> >> Then you could put a rule to block such mails. >> >> >> >> >> >> *Från:* Tara Natanson via mailop >> *Skickat:* den 24 oktober 2022 15:09 >> *Till:* mailop >> *Ämne:* [mailop] How do I break Gmail forwarding? >> >> >> >> >> >> At some point someone set up a gmail address which forwards automatically >> to our postmaster address. Yes I realize someone had to have clicked >> something to allow this to happen (multiple people monitor the box). But I >> cannot undo it. I do not control the original mailbox the mail is being >> forwarded FROM. >> >> >> >> Anyone have any tricks I'm missing? >> >> >> >> Tara Natanson >> ___ >> mailop mailing list >> mailop@mailop.org >> https://list.mailop.org/listinfo/mailop >> > ___ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop -- Bill Cole b...@scconsult.com or billc...@apache.org (AKA @grumpybozo and many *@billmail.scconsult.com addresses) Not Currently Available For Hire ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
If you can still find the original authorization email (yes, I know - probably unlikely depending on age of setup), there's a link to break it. Best, Faisal On Mon, Oct 24, 2022, at 3:09 PM, Tara Natanson via mailop wrote: > > At some point someone set up a gmail address which forwards automatically to > our postmaster address. Yes I realize someone had to have clicked something > to allow this to happen (multiple people monitor the box). But I cannot undo > it. I do not control the original mailbox the mail is being forwarded FROM. > > Anyone have any tricks I'm missing? > > Tara Natanson > ___ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop > ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
The worse thing is with forwarding of non-geographic phone numbers... (0345,etc, in the UK). We've had people ring us when they were trying to get through to the tax office, ambulance service (not 999), etc, etc. It's pretty much impossible to fix that. The dialer is calling the correct publicised number, but the NGN is configured to redirect to us, instead of the correct number. It seems like we're one of a pool of numbers, so if the caller retries, they often get through to a correct person. You try and get hold of the person whose job is to set up the phone forwarding to tell them they've typed a number wrong! You can't block it either, as the forwarding isn't signalled in any way. Paul On 24 October 2022 14:59:32 Tara Natanson via mailop wrote: Yup, I do have a way to filter. I just thought it was an interesting problem that the recipient of a systematic forward is not able to stop the forwarding of the mail. Tara On Mon, Oct 24, 2022 at 9:43 AM Sebastian Nielsen via mailop wrote: Im not talking if you know the address. Im talking if the address is present somewhere in the forwarded email. That’s a fundamental difference, because if you know the address, you cannot do so much to it, but if its present in the actual mail somehow (header, etc) you can write a filter to dump the crap into the trash. Från: Tara Natanson via mailop Skickat: den 24 oktober 2022 15:30 Till: Sebastian Nielsen Kopia: Mailing List Ämne: Re: [mailop] How do I break Gmail forwarding? Yes I know the address @gmail the messages are being sent to. I do not control that gmail inbox though. Tara On Mon, Oct 24, 2022 at 9:23 AM Sebastian Nielsen via mailop wrote: Does the MAIL FROM (Sender header) contain the gmail address? Does the MIME From contain the gmail address? Check the headers if the gmail address is SOMEWHERE there. Then you could put a rule to block such mails. Från: Tara Natanson via mailop Skickat: den 24 oktober 2022 15:09 Till: mailop Ämne: [mailop] How do I break Gmail forwarding? At some point someone set up a gmail address which forwards automatically to our postmaster address. Yes I realize someone had to have clicked something to allow this to happen (multiple people monitor the box). But I cannot undo it. I do not control the original mailbox the mail is being forwarded FROM. Anyone have any tricks I'm missing? Tara Natanson ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop -- Paul Smith Computer Services Tel: 01484 855800 Vat No: GB 685 6987 53 Sign up for news & updates at http://www.pscs.co.uk/go/subscribe___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
Yup, I do have a way to filter. I just thought it was an interesting problem that the recipient of a systematic forward is not able to stop the forwarding of the mail. Tara On Mon, Oct 24, 2022 at 9:43 AM Sebastian Nielsen via mailop < mailop@mailop.org> wrote: > Im not talking if you know the address. > > Im talking if the address is present somewhere in the forwarded email. > > > > That’s a fundamental difference, because if you know the address, you > cannot do so much to it, but if its present in the actual mail somehow > (header, etc) you can write a filter to dump the crap into the trash. > > > > *Från:* Tara Natanson via mailop > *Skickat:* den 24 oktober 2022 15:30 > *Till:* Sebastian Nielsen > *Kopia:* Mailing List > *Ämne:* Re: [mailop] How do I break Gmail forwarding? > > > > Yes I know the address @gmail the messages are being sent to. I do not > control that gmail inbox though. > > > > Tara > > > > On Mon, Oct 24, 2022 at 9:23 AM Sebastian Nielsen via mailop < > mailop@mailop.org> wrote: > > Does the MAIL FROM (Sender header) contain the gmail address? > > Does the MIME From contain the gmail address? > > > > Check the headers if the gmail address is SOMEWHERE there. > > Then you could put a rule to block such mails. > > > > > > *Från:* Tara Natanson via mailop > *Skickat:* den 24 oktober 2022 15:09 > *Till:* mailop > *Ämne:* [mailop] How do I break Gmail forwarding? > > > > > > At some point someone set up a gmail address which forwards automatically > to our postmaster address. Yes I realize someone had to have clicked > something to allow this to happen (multiple people monitor the box). But I > cannot undo it. I do not control the original mailbox the mail is being > forwarded FROM. > > > > Anyone have any tricks I'm missing? > > > > Tara Natanson > > ___ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop > > ___ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop > ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
"multiple people" - 3..5, or 60..100? If it's not too many who could have done it, ask them, have them fess up, and let the one who did it repair it. Otherwise, blocking the gmail address on mail ingress is probably the simplest solution. Cheers, Hans-Martin Am 24. Oktober 2022 15:16:30 schrieb Tara Natanson via mailop : At some point someone set up a gmail address which forwards automatically to our postmaster address. Yes I realize someone had to have clicked something to allow this to happen (multiple people monitor the box). But I cannot undo it. I do not control the original mailbox the mail is being forwarded FROM. Anyone have any tricks I'm missing? Tara Natanson ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
Im not talking if you know the address. Im talking if the address is present somewhere in the forwarded email. That’s a fundamental difference, because if you know the address, you cannot do so much to it, but if its present in the actual mail somehow (header, etc) you can write a filter to dump the crap into the trash. Från: Tara Natanson via mailop Skickat: den 24 oktober 2022 15:30 Till: Sebastian Nielsen Kopia: Mailing List Ämne: Re: [mailop] How do I break Gmail forwarding? Yes I know the address @gmail the messages are being sent to. I do not control that gmail inbox though. Tara On Mon, Oct 24, 2022 at 9:23 AM Sebastian Nielsen via mailop mailto:mailop@mailop.org> > wrote: Does the MAIL FROM (Sender header) contain the gmail address? Does the MIME From contain the gmail address? Check the headers if the gmail address is SOMEWHERE there. Then you could put a rule to block such mails. Från: Tara Natanson via mailop mailto:mailop@mailop.org> > Skickat: den 24 oktober 2022 15:09 Till: mailop mailto:mailop@mailop.org> > Ämne: [mailop] How do I break Gmail forwarding? At some point someone set up a gmail address which forwards automatically to our postmaster address. Yes I realize someone had to have clicked something to allow this to happen (multiple people monitor the box). But I cannot undo it. I do not control the original mailbox the mail is being forwarded FROM. Anyone have any tricks I'm missing? Tara Natanson ___ mailop mailing list mailop@mailop.org <mailto:mailop@mailop.org> https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
Yes I know the address @gmail the messages are being sent to. I do not control that gmail inbox though. Tara On Mon, Oct 24, 2022 at 9:23 AM Sebastian Nielsen via mailop < mailop@mailop.org> wrote: > Does the MAIL FROM (Sender header) contain the gmail address? > > Does the MIME From contain the gmail address? > > > > Check the headers if the gmail address is SOMEWHERE there. > > Then you could put a rule to block such mails. > > > > > > *Från:* Tara Natanson via mailop > *Skickat:* den 24 oktober 2022 15:09 > *Till:* mailop > *Ämne:* [mailop] How do I break Gmail forwarding? > > > > > > At some point someone set up a gmail address which forwards automatically > to our postmaster address. Yes I realize someone had to have clicked > something to allow this to happen (multiple people monitor the box). But I > cannot undo it. I do not control the original mailbox the mail is being > forwarded FROM. > > > > Anyone have any tricks I'm missing? > > > > Tara Natanson > ___ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop > ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
Block it at the receiving end. -- Alex ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] How do I break Gmail forwarding?
Does the MAIL FROM (Sender header) contain the gmail address? Does the MIME From contain the gmail address? Check the headers if the gmail address is SOMEWHERE there. Then you could put a rule to block such mails. Från: Tara Natanson via mailop Skickat: den 24 oktober 2022 15:09 Till: mailop Ämne: [mailop] How do I break Gmail forwarding? At some point someone set up a gmail address which forwards automatically to our postmaster address. Yes I realize someone had to have clicked something to allow this to happen (multiple people monitor the box). But I cannot undo it. I do not control the original mailbox the mail is being forwarded FROM. Anyone have any tricks I'm missing? Tara Natanson ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
[mailop] How do I break Gmail forwarding?
At some point someone set up a gmail address which forwards automatically to our postmaster address. Yes I realize someone had to have clicked something to allow this to happen (multiple people monitor the box). But I cannot undo it. I do not control the original mailbox the mail is being forwarded FROM. Anyone have any tricks I'm missing? Tara Natanson ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
