Hi Andrew, Sorry for misreading the 400k, my bad.
Thank you for sharing more details and the solution. Maarten > On 2 Dec 2021, at 22:52, Andrew Hearn via mailop <[email protected]> wrote: > > After trying a few things, disabling TCP Fast Open seems to have worked... > > My mail queue is being delivered successfully to Google MXs! > > A bit more about our system: > Stock Exim from Debian 11, using GnuTLS. > Exim version 4.94.2 #2 built 13-Jul-2021 16:04:57 > > And I added: > hosts_try_fastopen = > to the outbound smtp transport. > > Andrew. > > > > On 02/12/2021 12:50, Andrew Hearn via mailop 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 _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
