Strange issue with Qmail

[JuanCar]

Hello
I have found something strange in control panel about SMTP service (Qmail).
When I check services status of my server, I saw that SMTP was stopped, but I could send and recevie emails.
I check it by ssh (/etc/init.d/qmail status and mailmng --status-smtpd) and both of them sid SMTP was running.
I returned to plesk panel, and SMTP was running, I updated page and now SMTP appeared as stopped, after several updates SMTP appeared stopped and after update, again SMTP running.... It looks like SMTP service run and stop by itself. But vis SSH SMTP is always running.

Is that a normal situation? Where can I see if smtp connect and disconnect? Message log does not say anything.

Sorry: it is plesk 11.5.3, Centos 5, Linux, QMail
I added a per_source = 10 in smtp_psa (against spammers)
I use Black List filter
And iptables to filter Qmail user.
/sbin/iptables -A OUTPUT -d 127.0.0.1 -p tcp -m tcp --dport 25 -j ACCEPT
/sbin/iptables -A OUTPUT -p tcp -m tcp --dport 25 -m owner --gid-owner qmail -j ACCEPT
/sbin/iptables -A OUTPUT -p tcp -m tcp --dport 25 -m owner --gid-owner mailman -j ACCEPT
/sbin/iptables -A OUTPUT -p tcp -m tcp --dport 25 -m owner --uid-owner root -j ACCEPT
/sbin/iptables -A OUTPUT -p tcp -m tcp --dport 25 -j REJECT --reject-with icmp-port-unreachable

Regards

 

[HMoellendorf87]

Hi JuanCar,

did you checked the corresponding log files?

These are:

1. /var/log/maillog
2. /usr/local/psa/var/log/maillog

You should find there some detailed information.

Kind regards
Henning