I say strange because I don't see this on FreeBSD and Ubuntu-22.04. I am using the very same config files I usedon FreeBSD, but adapted for use on this Debian box. Strange again, because this is happening with all emails hitting this instance of Exim. Strange a third time because on the relevant transport, I added "message_linelength_limit = 1G" to see if that can mitigate the issue.
All clues are welcome. root@eu:/var/log/exim4# !printf printf "This is a test" | mail -s "This is a test" odhia...@gmail.com The result in the mainlog: 2024-08-05 18:06:01 cwd=/var/log/exim4 3 args: sendmail -i -t 2024-08-05 18:06:01 1sazHd-0001Wy-0y <= r...@eu.kictanet.or.ke U=root P=local S=464 T="This is a test" from <r...@eu.kictanet.or.ke> for odhia...@gmail.com 2024-08-05 18:06:01 cwd=/var/spool/exim4 3 args: /usr/sbin/exim4 -Mc 1sazHd-0001Wy-0y 2024-08-05 18:06:01 1sazHd-0001Wy-0y ** odhia...@gmail.com R=outbound T=remote_smtp: message has lines too long for transport <================================= 2024-08-05 18:06:01 cwd=/var/spool/exim4 7 args: /usr/sbin/exim4 -t -oem -oi -f <> -E1sazHd-0001Wy-0y 2024-08-05 18:06:01 1sazHd-0001X4-1g <= <> R=1sazHd-0001Wy-0y U=Debian-exim P=local S=1762 T="Mail delivery failed: returning message to sender" from <> for r...@eu.kictanet.or.ke 2024-08-05 18:06:01 1sazHd-0001Wy-0y Completed 2024-08-05 18:06:01 cwd=/var/spool/exim4 3 args: /usr/sbin/exim4 -Mc 1sazHd-0001X4-1g 2024-08-05 18:06:02 1sazHd-0001X4-1g => odhia...@gmail.com < r...@eu.kictanet.or.ke> R=outbound T=remote_forwarded_smtp S=1818 H= gmail-smtp-in.l.google.com [142.250.102.27] I=[62.169.xx.xxx] K C="250 2.0.0 OK 4fb4d7f45d1cf-5b83c03c279si4342736a12.467 - gsmtp" 2024-08-05 18:06:02 1sazHd-0001X4-1g Completed -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 In an Internet failure case, the #1 suspect is a constant: DNS. "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html] -- ## subscription configuration (requires account): ## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ ## unsubscribe (doesn't require an account): ## exim-users-unsubscr...@lists.exim.org ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
