Re: POP3 and SMTP slow on Linux since we installed a PIX

["Marcus J. Ranum" <mjr () nfr net>]

> We installed a PIX firewall and ever since POP and SMTP have been slow to
> establish a connection to the mail server on the DMZ from the inside. Has
> anyone here seen the same symptom?

Is it possibly a DNS problem? Does it take a minute or 2 for the
connection to complete? Often, DNS problems manifest as firewall
performance problems. It could be that the external server is
trying to resolve a name against a now-unreachable name server,
and waiting for a timeout.

mjr.
--
Marcus J. Ranum, CEO, Network Flight Recorder, Inc.
work - http://www.nfr.net
home - http://www.clark.net/pub/mjr