Hi, Sending 400K mailings with Exim, hats off! With large mailings you will always see some messages failing due to various reasons. Even with more powerful MTAs. I would expect that the 1000 mails are left in the queue due to the to 454 … over quota replies from Gmail. Are they all connection errors? Then I would suspect a problem on your side. An SMTP trace could help to diagnose the issue.
Maarten, Postmastery > On 2 Dec 2021, at 13:50, Andrew Hearn via mailop <[email protected]> wrote: > > Hello, > > We're a UK ISP, and relay email for our customers as well as send our > customers emails such as invoices. > > We currently have about 1,000 emails queued for google accounts and these are > failing with a timeout, eg from exim: > > 2021-12-02 11:48:05 1msize-005feQ-DI H=gmail-smtp-in.l.google.com > [142.250.13.26] TLS error on connection (send): The TLS connection was > non-properly terminated. > > 2021-12-02 11:48:05 1msize-005feQ-DI H=gmail-smtp-in.l.google.com > [142.250.13.26]: SMTP timeout after sending data block (525043 bytes > written): Connection timed out > > Based on past experience, eventually, the emails may will through. > > This is also intermittent, as sending to my own gmail address tends to get > through eventually, though they do still time out once or twice before > eventually getting through. > > Generally these emails do show as SPF/DKIM/DMARC PASS in gmail. > > This report is rather vague, but we do have further examples, logs, pcaps. > > Is someone from google on this list able to help investigate this problem > with us please? I can pass examples and pcaps privately. > > Thanks! > > Andrew, AS20712 aa.net.uk > > > > _______________________________________________ > mailop mailing list > [email protected] > https://list.mailop.org/listinfo/mailop _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
