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Old 9th March 2012, 11:01
till till is offline
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Did you try to send to a internal or external domain name? SMTP auth is only required on a mailserver when you send a email to a domain that is not on the local server (e.g. to gmail). Email to local domains never need smtp auth (thats the case on ispconfig 2 and 3 and any other mailserver) as it would be impossible to send a email to alocal domain if it would require auth for that. Another option where smtp auth is not used is inside local networks that are defined in mynetworks in postfix main.cf file.
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