/user/sbin/sendmail tasks are accumulating. Sockets are accumulating too.

As my server runs, it is slowing accumulating these tasks I can see in a ps -ax
18917 - I 0:00.07 /usr/sbin/sendmail -q (dma)
I have about 92 of these. I'm running FreeBsd 14.1, postfix version 3.9.
On the "digital twin", which is not in active use, I have none of these.
Everything else looks normal for the system.
sockstat shows 102 of these:
mailnull dma 18781 5 dgram -> /var/run/log

The server locked up 2 days ago, I still have a working ssh into it. There were 120 HTTP sockets (normally about 40) and a huge number of these mailnull dma entries. A reboot fixed it all, but they are accumulating. I suspect on that night, some outside site was trying to see how many HTTPs the server could have open at once.
Search for answers, none found, TIA

If it matters, there is also this info:
# cat /etc/mail/mailer.conf
sendmail /usr/libexec/dma
mailq /usr/libexec/dma
newaliases /usr/libexec/dma

and
# cat /usr/local/share/postfix/mailer.conf.postfix
sendmail /usr/local/sbin/sendmail
send-mail /usr/local/sbin/sendmail
mailq /usr/local/sbin/sendmail
newaliases /usr/local/sbin/sendmail
 
Back
Top