[mythtv-users] ADMIN: emails from mythtv-users bouncing with a reason that shouldn't exist.

[Stephen Villano]

Found a solution, it seems that exim4 enforces the line length in
accordance with the RFC line length.
In a Debian Stretch and newer based installation, edit
/etc/exim4/update-exim4.conf.conf with:
IGNORE_SMTP_LINE_LENGTH_LIMIT='true'

https://blog.dhampir.no/content/exim4-line-length-in-debian-stretch-mail-delivery-failed-returning-message-to-sender


On 1/3/20, A. F. Cano <afc54 at comcast.net> wrote:
> Hi,
>
> I'm switching over to a faster computer and more modern version of
> Debian (from 7 to 10) and the new version of exim4 is bouncing emails
> from mythtv-users only, all the other mailing lists appear to be working
> fine.  This is what fetchmail tells me:
>
> 2 messages for afc54 at comcast.net at imap.comcast.net.
> reading message afc54 at comcast.net@imap.ge.xfinity.com:1 of 2 (6659
> header octets) (1540 body octets) flushed
> fetchmail: SMTP error: 550 maximum allowed line length is 998 octets,
> got 1039
> fetchmail: mail from MAILER-DAEMON@<internal name of machine> bounced to
> mythtv-users-bounces at mythtv.org
> fetchmail: SMTP listener refused delivery
> reading message afc54 at comcast.net@imap.ge.xfinity.com:2 of 2 (5809
> header octets) (4266 body octets) flushed
>
> The second message went through just fine.  Is this a problem with the
> mythtv.org mailer?  Everything I've found when searching for this error
> is old (from 2016) and says that this error shouldn't happen and is
> caused by misconfigured mailers that don't adhere to standards.
>
> Has anyone else seen this? I presume other people are running modern
> email software.
>
> Augustine
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