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Old 16th May 2011, 15:22
vaio vaio is offline
Join Date: Nov 2010
Posts: 48
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I have found solution!

For all others here it is:

1. follow Till HOW TO

2. go to ISPconfig admin section
3. click System -> Firewall
4. Add there port 465 and confirm

This should solve problem of smtp port 25 being blocked by some ISPs.
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