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Old 11th February 2011, 15:29
till till is offline
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If you set a different smtp port then port 25, your server will not receive any emails as the foreign mailserver does not know which port shall be used. So changing the port will not give you a working mailserver.

If you want to use your server only for outgoing email and dont need to receive any emails, then you can activate the submission port in postfix by removing the # in front of the submission line and restart postfix.
Till Brehm
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