Problems with email delivery from sourceware?

[Eli Zaretskii]

> From: Florian Weimer <fweimer@redhat.com>
> Cc: Lancelot SIX <lsix@lancelotsix.com>,  Eli Zaretskii <eliz@gnu.org>,
>   schwab@linux-m68k.org
> Date: Tue, 15 Jun 2021 22:32:48 +0200
> 
> * Eli Zaretskii via Gdb-patches:
> 
> > But if I was the only one who experienced these strange delays, then I
> > don't want to waste bandwidth on these issues anymore.  Thanks for
> > taking the time to look at the message I sent as an example.
> 
> I encountered similar delays just before VERP was enabled for
> sourceware.org.  Apparently it was not possible to figure out the cause
> of the mail delays based on the available Postfix logs.  As I result, I
> don't know if it was Red Hat's email infrastructure or sourceware that
> caused the delay.  Like in your case, the Received: lines only showed
> that the hand-off between the two domains did not happen in a timely
> fashion.

Thanks.

FYI: I asked the gnu.org sysadmins, and they replied that something
went wrong with sourceware.org's mail server, which caused the email
from there to trigger the fail2ban rule on gnu.org mail servers.  The
solution was to unban and whitelist sourceware.org.

So yes, both sourceware.org and gnu.org mail delivery were parts of
the puzzle here.