Debugging a slow SMTP server connection problem

Apr 03, '03 09:32:00AM

Contributed by: Anonymous

For the past few months I have had to contend with unbearably slow outgoing email. It seemed to take an age to connect to the SMTP server and send even a single line of text. I tried the MTU fix, I tried different mail clients - all the same thing.

I finally found today that if I turn off the OS X software firewall, it solves the problem. I'm behind two hardware corporate firewalls anyway, so it's clearly redundant. Go to System Preferences -> Sharing -> Firewall and press Stop.This fixed the problem for me and hope it helps others.

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Mac OS X Hints
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