[courier-users] Server SMTP delay

This Friday at about 3pm PST I had 5 different courier servers ranging
in verions from 0.47 to 0.50 simultaneously start taking about 30+
seconds to initiate an SMTP session remotely (from inside or outside the
network). Connecting from the localhost is no trouble at all. They're
all serviced by different ISPs via T1 or DSL and none of them show
excessive load or connections, or any dropped packets.

I'm running the most recent version of spamassassin via maildrop and
clamd via amavis on all of them. Disabling both of these services
doesn't change the delay behavior.

The only problem this is causing is clients relaying email are getting
time-out errors. Am I alone here or is anyone else experiencing this
problem? Any idea what could be wrong and how I can fix it (other than
increasing the timeout delay on the client side)?

-Scott


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