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AW: [suse-security] Can't access from outside


I think this is your problem:

> mynetworks =, 
> smtpd_recipient_restrictions = permit_mynetworks,
When connecting from outside your origin is not "mynetworks".

Test it from outside with a 

$ telnet yourserver.dyndns.org 25

If you get an answer like:

220 yourserver.dyndns.org ESMTP Postix

it is not a firewall problem. Then you will have to configure postifx


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