On 2021-12-03 12:00, Andrew C Aitchison wrote: > > I am just passing on, with permission, something exim related > from the mailop@??? list.
Thank you, Andrew, that helped me a lot. This issue appeared for me some time ago -- all messages *with attachments* (even small ones) sent to Google MX (and only to them) are timed out. They were all getting delivered but with delays of 0.5 to several hours. I have few such mails per hour, no bulk sending, DKIM and DMARC (and DANE) configured. With TCP Fast Open disabled they are now delivered immediately. Thanks! A. -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
