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Email not relaying to ONE domain, 550 error

C

chud67

Guest
I can't send email to one domain on my server. Email to all other domains works fine. The message I get back is:

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There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<local smtp server> #5.5.0 smtp;550 relaying to <email address> prohibited by administrator>
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There is NOTHING in /var/log/messages nor /usr/local/psa/var/log/maillog that indicates a problem...which is a problem in and of itself! Mail to other domains is logged.

I verified that this particular domain is listed in both /var/qmail/control/rcpthosts and /var/qmail/control/virtualdomains.

Also, the server's hostname resolves and there is a valid MX record.
 
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