PPRuNe Forums - View Single Post - Cannot SEND emails - Outlook 2007
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Old 29th April 2012 | 21:34
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Milo Minderbinder
 
Joined: Jan 2012
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From: .
and some ISPs block port 25 for mail routed through 3rd party servers - hence my question
Sometimes you have to use port 26, on others you have to authenticate, on others use SSL.
Depends on the ISP and mail provider combination
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