This seems to be the issue. I use the pfSense as my forwarder. "Normal" requests are passing without problems, but the specific dnsbl queries are not. I configured external DNS servers now.
It is working now!
Jul 1 11:41:42 mx postfix/dnsblog[1366]: addr 103.167.90.52 listed by domain...
Ok I found the entry and indeed there is more information, thanks for the hint:
Jul 1 06:36:02 mx postfix/postscreen[14226]: warning: dnsblog reply timeout 10s for escalations.dnsbl.sorbs.net
Jul 1 06:36:02 mx postfix/dnsblog[14235]: warning: dnsblog_query: lookup error for DNS query...
Hi,
I receive a massive amount of spam every day. I am searching for the root cause and checked one of the messages. The IP of the sending server does appear on the Barracuda Blacklist, if I manually check this, nevertheless it gets delivered to me.
It seems that there is no RBL check at all...
Hallo zusammen,
ich hatte vor längerer Zeit einen Freemail-Account (GMX), auf den ich nun keinen Zugriff mehr habe (Kennwort+Sicherheitsfragen unbekannt,persönliche Daten stimmen nicht überein). Als ich damals auf einen eigenen Mailserver gewechselt bin, hatte ich eine Weiterleitung auf meine...
Hi again,
found an old thread saying that the subject is hardcoded and not changeable, so I use postfix to manipulate the outgoing mail:
/etc/postfix/main.cf:
header_checks = regexp:/etc/postfix/short_subject.regexp
/etc/postfix/short_subject.regexp:
/^Subject: vzdump backup status...
Hi,
I am forwarding the vzdump result mails to Pushover (SMTP to Push-Gateway).
Unfortunately I cannot see the result of the vzdump in the title as it is too long for the smartphone screen.
Is there a way to change the subject of the result mails or do I need to use own hook scripts?
Greetings...
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