Hi Peter
I have experienced similar behaviors. It turned out to be due to
spamdyke and was detected in /var/log/maillog:
spamdyke: DENIED_OTHER from: (unknown) to: encryption: TLS reason:
550_5.5.3_sorry,_reached_maximum_number_of_recipients_allowed_in_one_session_(chkuser)
Until I raised CHKUSER_RCPTLIMIT in /etc/tcprules.d/tcp.smtp
was the only solution to reboot.
By the way, it only affected the specific sender.
Regards,
Allan Dukat
On 2020-09-16 17:45, [email protected] wrote:
Hello Angus and Remo,
This looked whats happening. After a few day the server starts
"temporarily rejected" messages again and I need to restart the mail
server.
Is there a log file were I can see if Clamav is crashed?
An other question is there a way to skip the clamav check. My mail
server is only used to send reset password mails.
Thanks for your advices.
Peter
Angus McIntyre schreef op 2020-09-16 17:19:
Also, use 'toaststat' or equivalent to make sure all the components of
your toaster are up and running.
If you don't have enough memory on your box, then ClamAV will
sometimes crash, making mail undeliverable and generating the
"temporarily rejected" message you've seen. Rebooting will cure that
... until the next time.
ClamAV's appetite for memory is large and growing, and last time I
looked the consensus was that you'd need a minimum 3-4GB available.
Angus
Remo Mattei wrote on 9/16/20 11:10 AM:
Enable debug to get more info.
:allow,SIMSCAN_DEBUG="2”,xxxxxxxxx
on /etc/tcprules.d/tcp.smtp
Remo
On Sep 16, 2020, at 8:07 AM, [email protected] wrote:
Hello,
I've seen recently my mail server stops accepting mails with the
following message:
===
451 mail server temporarily rejected message (#4.3.0)
===
Does any one knows what is going on here? Is there any log which
give me some feedback why the mailserver give this error message?
I suspect that the load was to high. But at the moment that I looked
the load is mimimal, however, the mail server still gives this
return message, so it looks like qmail isn't restoring the level
that it will accept messages again.
My only solution was to reboot the server. After that the mailserver
accepts messages.
I hope someone can help me.
Regards,
Peter
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