A few of my users have been getting this error (501 unacceptable mail address; 501 5.6.0 Data Format error) the past few days:

The original message was received at Tue, 3 Jun 2003 16:37:58 -0400
from digital-1-37.exis.net [65.120.51.37]

   ----- The following addresses had permanent fatal errors -----
<[EMAIL PROTECTED]>
    (reason: 501 unacceptable mail address)

   ----- Transcript of session follows -----
... while talking to mail.rogersbenefit.com.:

>>> MAIL From:<[EMAIL PROTECTED]> SIZE=744


<<< 501 unacceptable mail address
501 5.6.0 Data format error

This user exists and the sending address looks fine.


In the log file, I did a search for the (sending) [EMAIL PROTECTED] address and came up with this:
20030603 134052 127.0.0.1 SMTPD (085A00B2) [192.168.0.2] connect 65.120.48.2 port 50600
20030603 134052 127.0.0.1 SMTPD (085A00B2) [65.120.48.2] EHLO Marlin.exis.net
20030603 134053 127.0.0.1 SMTPD (085A00B2) [65.120.48.2] unacceptable mail address in MAIL From:<[EMAIL PROTECTED]>
20030603 134104 127.0.0.1 SMTP (2900) requeuing d:\IMail\spool\Q998f6b8.FWP R0 T4


I went to DNSStuff.com and checked this address and it comes up fine.

Any ideas? Thanks.

Kevin


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