Re: [mailop] Strange Behavior from Microsoft IP Address

On Tue, 7 May 2024, Vitali Quiering wrote: We've identified an IP address, notably tied to Microsoft (20.203.218.75), executing thousands of hits on our URLs almost immediately after dispatching a newsletter. However, the peculiar part is the variation in the hash segments they're accessing.

Re: [mailop] Gmail + Spamhaus "technical values and unusual sending behaviors"

On Mon, 6 May 2024, K. M. Peterson wrote: I'm going to have to put together some sort of automated reporting of when I get blacklisted, I can recommend . /mark ___ mailop mailing list mailop@mailop.org

[mailop] Google Postmaster Tools

On Sun, 31 Mar 2024, Odhiambo Washington wrote: Might someone know what I must do to get data showing on https://postmaster.google.com/managedomains ? I have two verified domains in there, but nothing on the (expected) dashboard. You must reach a certain volume of messages before anything

Re: [mailop] Outgoing Spam from Microsoft IPs

[Piggybacking as I didn't see Matt's message directly] On Mon, 19 Feb 2024, Gellner, Oliver wrote: On 16.02.2024 at 03:38 Matt Palmer via mailop wrote: Although I must say that without reverse DNS would seem to be the easier blocking option -- when was the last time you saw legitimate

Re: [mailop] Is forwarding to Gmail basically dead?

On Mon, 12 Feb 2024, Dave Crocker wrote: On 2/12/2024 4:37 PM, Mark Milhollan via mailop wrote: On Mon, 12 Feb 2024, Dave Crocker wrote: 1. S/MIME has been around for 25 years. While it has gained    respectable amounts of implementation in MUAs, it has achieved use    only in specialized

Re: [mailop] Is forwarding to Gmail basically dead?

On Mon, 12 Feb 2024, Dave Crocker wrote: 1. S/MIME has been around for 25 years.  While it has gained respectable amounts of implementation in MUAs, it has achieved use only in specialized environments.  Google could greatly accelerate its uptake by automatically providing every

Re: [mailop] zen.spamhaus.org

On Tue, 6 Feb 2024, Odhiambo Washington wrote: On Wed, Feb 7, 2024 at 12:53 AM Mark Milhollan wrote: On Tue, 6 Feb 2024, Odhiambo Washington wrote: Today morning I woke up to all emails being rejected as I was using zen.spamhaus.org in my dnslists. Are you using your own resolver (like

Re: [mailop] zen.spamhaus.org

On Tue, 6 Feb 2024, Odhiambo Washington wrote: Today morning I woke up to all emails being rejected as I was using zen.spamhaus.org in my dnslists. Almost all incoming emails - even from gmail.com - were being rejected. Did I maybe miss something? Are you using your own resolver (like BIND,

Re: [mailop] Contact Google Postmaster

On Fri, 26 Jan 2024, Scott Mutter wrote: The 173.225.104.91 server has sent 68 emails to gmail.com email addresses thus far in January 2024. GPT will not present data for that volume. From their FAQ: "Most of the Postmaster Tools dashboards will only display data when there’s a sizable

Re: [mailop] Gmail blocking of good customer

On Fri, 24 Feb 2023, Rob McEwen wrote: Quite frankly, I'm constantly amazed at how often I see assumptions from so many - that assume Google is always right and the other entity is wrong - even when all the facts point to the opposite. I never said Google was "right", but if you want to

Re: [mailop] Gmail blocking of good customer

On Fri, 24 Feb 2023, Christine Borgia wrote: I have a customer whose email campaign was heavily blocked yesterday by Gmail with the error: 421 4.7.0 [149.72.90.158 15] Our system has detected that this message is suspicious due to the very low reputation of the sending domain. To best protect

Re: [mailop] Microsoft Sending DMARC Reports From IP In SBL

On Tue, 19 Jul 2022, Matt Corallo wrote: Relevant headers below, but note that its actually the very first Received header that matches SBL-CSS. You are via Spamassassin doing what Google does and I guess at least some other Spamassassin users do -- presuming to know how earlier hops should

Re: [mailop] forwarding to gmail - problem

On Thu, 28 Apr 2022, Scott Mutter wrote: configure your Gmail account to POP mail from that POP3 mailbox. This side steps the issues of SPF failing, It does not. As recently discussed, Gmail plays a game of trying to guess whether SPF should have failed on a previous hop, rather than just

Re: [mailop] gmail - pop3 retrieval checking SPF ? ( gmail, wth ? Take 2 )

On Wed, 13 Apr 2022, Paulo Pinto wrote: Why on earth is gmail checking the IP address of the message sender (ISP assigned home address, for instance) against the sender's domain SPF I've mentioned it before to which got a "I don't think we do that" when it was plain they did (their own SPF

Re: [mailop] Best mailbox provider for personal domain?

On Sun, 10 Apr 2022, Byron Lunz wrote: I don't recall seeing any discussion in this thread about how to migrate old email messages from a Google Workspace account to a different host. Anyone have advice or suggestions on how to do that? If you use a desktop MUA likely you just add the other

Re: [mailop] subaddresses, was Best mailbox provider for personal domain?

On Sat, 9 Apr 2022, John Levine wrote: PS: Gmail allows general plus addresses, Yahoo allows a limited number, can't think of any other significant commercial mail system that allows either. Apart from whether they are significant I've found many others provide plus addressing /

Re: [mailop] What am I supposed to do with abuse complaints on legit mail?

It is too bad if you or your user feels the message was legit but reported as junk, spam or unwanted, whether directly or indirectly, whether mistaken or not -- even messages that "need" to be delivered might get you blocked. PSA: You should authenticate bounces, feedback reports and even

Re: [mailop] How to detect fraud login in POP IMAP or SMTP?

On Tue, 21 Sep 2021, Michael Peddemors wrote: Use RATS-AUTH to block auth attacks, from known dedicated IP(s) ;) I've tried this, so far it has blocked 7 of 4933 AUTH attempts since I began using it. Block AUTH from Amazon/Gcloud/Azure by default Would you include other clouds, like

Re: [mailop] Gmail putting messages to spam

On Mon, 20 Sep 2021, Ken O'Driscoll wrote: 2. Your sending domain (rafa.eu.org) is a sub-domain of a pseudo-TLD which a) gives sub-domains away for free, and b) has an overly permissive SPF policy ("v=spf1 +all"). The reputation of your sub-domain is going to be influenced by the reputations

Re: [mailop] SNDS At Work

On Tue, 7 Sep 2021, Mike Hammett wrote: I now manage another ISP with another set of e-mail servers I went to sign up for SNDS with my work e-mail. I don't want to use my existing account because I want some amount of separation of duties. What are the rest of you doing in these kinds

Re: [mailop] I disabled Spamhaus checking due to false-positives

On Thu, 15 Jul 2021, Bastian Blank wrote: Did you check the result of those RBL requests? Spamhaus also provides specific codes for errors, so you _must_ explicitely list what codes you want to accept. See https://www.spamhaus.org/faq/section/DNSBL%20Usage#200 what those mean. I've been

Re: [mailop] I disabled Spamhaus checking due to false-positives

On Fri, 16 Jul 2021, Al Iverson wrote: is it bad vibes to query Spamhaus directly against a.gns.spamhaus.org - e.gns.spamhaus.org? Those are the servers that would normally be queried, in that they are the listed NS for the DBL, PBL, SBL, XBL, SBL-XBL and ZEN zones. /mark

[mailop] I disabled Spamhaus checking due to false-positives

Spamhaus has been working fine for me and has been a wonderful resource for many years, but I recently decided I had to disable using them on my personal, low volume mail server because of a few recent surprises (that's right, I don't look at Spamhaus rejects, timestamps are UTC): Jul 10

Re: [mailop] Gmail's MTA is broken

On Sun, 6 Jun 2021, Larry M. Smith wrote: Seems that gmail.com's MTA can't properly speak SMTP. I've been seeing re-queuing and re-sending of permanent failures for some time now, Delivery incomplete There was a temporary problem delivering your message to [redacted]. Gmail will retry for

Re: [mailop] Ooo.. That's an ugly email header..

On Fri, 26 Feb 2021, Michael Peddemors wrote: can any one guess why they need THAT much data in the email header? It seems that those that add giant or lots of headers are doing so for future analysis purposes where logs are not kept or may have expired by the time an investigation might

Re: [mailop] Hotmail and block on OVH: possible solutions alternatives?

On Thu, 25 Feb 2021, Michael Peddemors wrote: Also, speaking of whois, pet peeve that some of the whois databases never seem to be updated/cleaned up. And some of the biggest don't publish anything. whois 51.79.55.200 Still thinks RIPE is responsible.. Your whois program thinks that --

Re: [mailop] RFCs on quoted pairs in From:?

On Thu, 28 Jan 2021, Paul Smith wrote: From: "Joe " Subject: test and Thunderbird tries to reply to b...@example.com. That is totally wrong! It's a bug and needs reporting. At a guess, it is a mistaken attempt to work around a rewritten From header (e.g., for SPF reasons) but no Reply-To

Re: [mailop] t-online.de refuses to remove an ip from their blacklist

On Thu, 18 Jun 2020, Benoît Panizzon wrote: AFAIK only one PTR per RR is allowed, Incorrect. Whether others will process them in a way you want might be the larger concern. /mark ___ mailop mailing list mailop@mailop.org

Re: [mailop] Anyone have any luck delisting from Microsoft's Advanced Threat Protection (ATP)?

On Wed, 13 May 2020, Alex Burch wrote: we tried going this route - we went through paid support in our Office/Microsoft365 account (Business Premium) and these tickets have not been resolved. Is there no way to ask for or demand escalation? Or by "not resolved" do you mean "as we

Re: [mailop] Sendgrid strikes again; zendesk, actually

On Wed, 26 Feb 2020, Paul Smith wrote: ## In replies all text above this line is added to the ticket ## Your Twilio Ticket ID # 3806345 Encoded ID # [Q54RWY-VROX] Your Ticketing System's ID # (if we have recorded one): - This email is a service from

Re: [mailop] sendgrid sending spam claiming to be chase.com

On Mon, 23 Dec 2019, Carl Byington wrote: The spam was sent with a From: header of @email.chase.com. _dmarc.email.chase.com. has a txt record with p=reject, so it was rejected here. Sendgrid - you should be able to check that at your end, and just not send anything that violates the dmarc

Re: [mailop] Gmail doesn't like my IPv6 address, why?

On Wednesday 2019-12-18 12:18, Brian wrote: For what I can see on my logs, Gmail seem to prefer v6 when delivering emails to my server, but for some reason when my server uses v6 to deliver emails their milters mark them as spam (except of course when I send test emails to my 15 years old

Re: [mailop] BIMI

On Tuesday 2019-12-10 17:32, John R Levine wrote: I sadly realize that I am the last person in the world using Alpine. Not quite, but indeed not a large crowd. /mark ___ mailop mailing list mailop@mailop.org

Re: [mailop] Issue with Mailop 'From' header

On Wed, 14 Aug 2019, Andy Smith wrote: On Wed, Aug 14, 2019 at 12:09:10PM -0600, Anne P. Mitchell, Esq. via mailop wrote: Something has changed in the past several weeks so that email from Mailop now comes: From: ..making triage, etc., of reading Mailop mail more onerous now, I

Re: [mailop] Outlook/Hotmail reporting to us that a mail has been declared as SPAM by a recpient, but... ?

On Fri, 28 Jun 2019, Sébastien Riccio wrote: We've seen this a few times. We've come to the conclusion that it's either anti-spam software on the local computer that is automatically moving the email into the user's spam folder (and thus marking it as spam), For example Thunderbird defaults