On Sun, May 23, 2021 at 02:16:24PM -0700, Greg Sims wrote:
> # postconf | grep chunking
> smtpd_discard_ehlo_keywords = chunking
>
> # journalctl -u postfix | grep CHUNKING
> May 23 03:40:59 mail01.raystedman.org postfix/smtpd[401681]: discarding EHLO
> keywords: CHUNKING
> <<We saw 24 of these log entries in 24 hours.>>
That means that you're spawning a new smtpd(8) process roughly once an
hour, with connections otherwise handled by an existing process, which
already logged the disabled ESMTP feature with the first connection it
handled.
> We are running the latest version of RHEL 8. I believe a number of us
> will be seeing this entry in our logs. What are the negative side
> effects beyond the log entries?
There are no negative side-effects, but the logs record that you've
chosen to disable a default ESMTP feature, presumably as a work-around
for some issue. Once the issue is no longer pertinent, you can turn the
workaround off.
> Is "smtpd_discard_ehlo_keywords = chunking, silent-discard" the
> recommended solution?
Well, the recommended solution is to not disable CHUNKING, but if
you must disable it for some reason, you get to choose whether to
be reminded of this in your logs, or not.
--
Viktor.
