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twolinesFlag for United States of America asked on

POP3 connection is very slow or fails

There is qmail installed. POP3 connection is very slow or fails if my local namerservers are specified in /etc/resolv.conf. As soon as I change content of /etc/resolv.conf to some external nameservers (i.e., POP3 connection starts working just fine.
My local name servers are resolving domains fine, including reverse records. No delays noticed.
Email ServersDNS

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Daniel McAllister

8/22/2022 - Mon

Can you log what DNS queries are genereated during such a POP3 session?
I.e. either turn on logging at your local nameservers during a "slow" session or tcpdump traffic to during a "fast" session?
Daniel McAllister

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