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Postfix smtp wont let me send mail out of outlook; everything works fine with squirrlemail ...

i have outlook set up as IMAP server; and for my servers I have mail.solunatec.org as in the dns server; I have tried to send mail with smtp, smtpd, mail.solunatec.org, etc.; everthing works fine if I use simply squirrelmail ( I have to set up outlook for others) ; outlook recieves mail fine but wont send out and gives me this same error message:

The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'peluce@live.com'. Subject 'Re: ', Account: 'mail.solunatec.org', Server: 'mail.solunatec.org', Protocol: SMTP, Server Response: '554 5.7.1 <peluce@live.com>: Relay access denied', Port: 25, Secure(SSL): No, Server Error: 554, Error Number: 0x800CCC79
1 Solution
The IP address of your computer(s) running outlook must be configured in postfix.
For details see
solunatecAuthor Commented:
...also changed port to 587;

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