Re: [mailop] IMAP and SMTP in the same or separated IPs?

2021-10-16 Thread Jay Hennigan via mailop
On 10/15/21 17:40, Grant Taylor via mailop wrote: On 10/15/21 5:37 PM, Dave Crocker via mailop wrote: Yes, but... That's the point that is intuitively reasonable which doesn't make real sense to me, after thinking about it. What doesn't make real sense to you?  The relation of reputation and

Re: [mailop] SSL certs, IMAP and SMTP in the same or separated IPs?

2021-10-16 Thread John Levine via mailop
It appears that Dan Mahoney via mailop said: >I will say, as a data-point, that dayjob has had one customer that required us >to use a CA for our SMTP server that’s on a whitelist-approved by a >certain automaker industry consortium. To the point where when they decided >they couldn’t

Re: [mailop] IMAP and SMTP in the same or separated IPs?

2021-10-16 Thread Dave Crocker via mailop
On 10/15/2021 5:40 PM, Grant Taylor via mailop wrote: The motivation for spreading service IPs across different /24 prefixes is so that if The issue here is not the generic one of using multiple IPs. It is about using them to separate IMAP from SMTP. That's an entirely different matter.

[mailop] Gmail - messages to self accepted by SMTP, not delivered

2021-10-16 Thread Kostya Vasilyev via mailop
Anyone from Google here? I'm seeing a bug where messages sent to same Gmail account (same from and to @gmail.com address) are accepted by smtp.gmail.com but are never delivered, dropped instead. This happens if: - Messages are sent using a mail app using IMAP / SMTP - Mail app uses OAUTH2 for

Re: [mailop] IMAP and SMTP in the same or separated IPs?

2021-10-16 Thread Dave Crocker via mailop
On 10/15/2021 6:44 PM, Grant Taylor via mailop wrote: I can see a hypothetical scenario where a client is running a firewall that is filtering connections based on IP reputation.  So if an SMTP server is erroneously listed, said firewall might block the IP, thereby blocking the client's

Re: [mailop] IMAP and SMTP in the same or separated IPs?

2021-10-16 Thread Dan Mahoney via mailop
I will say, as a data-point, that dayjob has had one customer that required us to use a CA for our SMTP server that’s on a whitelist-approved by a certain automaker industry consortium. To the point where when they decided they couldn’t communicate with a secure SSL cert (even though SSL was

Re: [mailop] Gmail - messages to self accepted by SMTP, not delivered

2021-10-16 Thread Jarland Donnell via mailop
I've had customers repeatedly approach me about a similar issue and I ended up writing this in mass response: https://mxroute.com/docs/im-forwarding-or-retrieving-email-to-at-gmail-and-when-i-send-a-test-email-from-the-same-address-that-will-ultimately-be-receiving-it-it-doesnt-work/ I could

Re: [mailop] IMAP and SMTP in the same or separated IPs?

2021-10-16 Thread Grant Taylor via mailop
On 10/15/21 11:54 PM, Michael via mailop wrote: Remember, each lookup against Let's Encrypt shares information, that can be resold. What is different for a CA that a certificate is purchased from? -- Grant. . . . unix || die smime.p7s Description: S/MIME Cryptographic Signature

Re: [mailop] DKIM signing with ed25519 keys - leap of faith

2021-10-16 Thread Alessandro Vesely via mailop
On Thu 14/Oct/2021 21:35:02 +0200 Alexey Shpakovsky via mailop wrote: Worth noting that OpenDKIM's latest stable release was in 2015, and latest beta in 2018. The app seems to be in somewhat active development on Github, but to see it you must switch from default "master" branch to more active

Re: [mailop] how SSL works, was IMAP and SMTP in the same or separated IPs?

2021-10-16 Thread John R Levine via mailop
On Fri, 15 Oct 2021, Michael wrote: I prefer to think that the company I pay $$ to for a cert, makes enough they don't have to sell our data. Remember, each lookup against Let's Encrypt shares information, that can be resold. Sorry, but that is simply wrong. It's not how SSL works. The

[mailop] Another admin note.

2021-10-16 Thread Graeme Fowler via mailop
Making no apology whatsoever about top posting from my phone's mail client: STOP with the niggles. Please, just stop. "I'm getting 1 unsolicited calendar invites from $provider every minute" seems to me a legitimate operational problem and one worth raising here, and/or directly with

Re: [mailop] Gmail putting messages to spam

2021-10-16 Thread yuv via mailop
On Fri, 2021-10-15 at 18:07 -0500, Mike Jovanovic via mailop wrote: > Gmail can send email to spam if it arrives in a language that is > different from the recipient's default language setting. Do you have evidence to substantiate your claim? I have plenty of beef with Big Tech, but it is not

Re: [mailop] Google's contributions to spam volume (was: Re: Google should be burnt or blown up (was: Gmail putting messages to spam))

2021-10-16 Thread yuv via mailop
On Tue, 2021-10-05 at 18:15 -0700, Brandon Long via mailop wrote: > larger providers are their own special targets. Thank you for sharing with us the perspective of a Big service provider, and how you deal with annoyances on that exa-scale. > We also see spammers try to use Gmail to spam other