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SMTP error returned from MAC mail server

Sending mail from Outlook Express 6 to my Mac mail account errors with "An unknown error was returned from the SMTP server. Server: 'smtp.mac.com', Protocol: SMTP, Server Response: '556 5.1.0 Invalid From header', Port: 587, Secure(SSL): No. Server Error: 556, Error Number 0x800CCC61".
Does anyone have an idea what the problem is? OE 6 can download email from the Mac account so at least some of the OE 6 configuration is correct.

iMac Core 2 Duo Mac OS X (10.4.9)

iMac Core 2 Duo, Mac OS X (10.4.9)

Posted on May 31, 2007 5:25 PM

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SMTP error returned from MAC mail server

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