E-mail FROM domain change -postfix

rush_pl · 12-21-2006, 02:52 PM

Switched to a Debian Testing server with Postfix. I used this postfix configuration on a slackware server with no problems before. The problem now is when i send a message from the server, the receiving party displays in the FROM field user@hostname.domain.com instead of the usual user@domain.com. I have the hostname and domain configured in the main.cf file. I am unable to figure out why the server hostname is inserted in the address. Not sure if this is postfix configuration or DNS problem.

Any help is appreciated.

Thanks

billymayday · 12-21-2006, 02:56 PM

Do you have "myorigin" set in main.cf?

Quote:

# The myorigin parameter specifies the domain that locally-posted
# mail appears to come from. The default is to append $myhostname,
# which is fine for small sites. If you run a domain with multiple
# machines, you should (1) change this to $mydomain and (2) set up
# a domain-wide alias database that aliases each user to
# user@that.users.mailhost.

rush_pl · 12-21-2006, 03:01 PM

Yes. It is set to myorigin = $mydomain. No matter if it is set to $myhostname or the actual domain.com it still adds the server hostmane to the domain part of the e-mail address.

billymayday · 12-21-2006, 03:40 PM

To be honest, I'm not sure if the myorigin works for me as I also use a generic map. This should fix the problem if you want to follow this route, although there must be a simpler explanation and solution.

To /etc/postfix/generic (assuming the path is correct) add

@hostname.domain.com @domain.com

postmap /etc/postfix/generic

and add/uncomment

smtp_generic_maps = hash:/etc/postfix/generic

in main.cf

rush_pl · 12-22-2006, 07:44 AM

Did a search for the generic file on the system but no results. I created the file and followed the generic(5) man pages. Basically did what you said billymayday. Tested and works. Thanks For the help.

kbrede · 12-22-2006, 08:35 AM

IIRC I used to put the name in /etc/mailname on Debian. I haven't had a mail server running on Debian for a while so can't remember for sure, but "man mailname" leads me to believe that's still how it's done.
Kent

rush_pl · 12-22-2006, 08:41 AM

had hostname.domainname.com in /etc/mailname. Changing that to just the domain name does the trick. Thanks