Dear list,

This morning I stumbled upon a strange problem. Mail delivery to an exchange backend did not work:

 refused to talk to me: 501 5.5.4 Invalid Address)

After some troubleshooting an googling I found http://support.microsoft.com/kb/291828.

When using the contents of a file for the smtp_helo_name (or with e.g. myorigin) it appends a '.' to the end of the hostname. And according to the rfc this isn't allowed.

Why is postfix appending the . ?

Thanks in advance,


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Rudy Gevaert          rudy.geva...@ugent.be          tel:+32 9 264 4734
Directie ICT, afd. Infrastructuur  Direction ICT, Infrastructure dept.
Groep Systemen                     Systems group
Universiteit Gent                  Ghent University
Krijgslaan 281, gebouw S9, 9000 Gent, Belgie               www.UGent.be
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