Mail Server Setup With Exim, MySQL, Cyrus-Imapd, Horde Webmail On Centos 5.1

[smartcall]

Hello and thanks for the howto. I've been using this mailserver setup for a few years now, but recently I noticed that some of the recipients MTA reject messages when sent from an email client like Tunderbird or Outlook Express.
The difference between a message sent from a client and the one sent from horde is in the Sender name.

From Horde is correct - user@virtualdomain.com
From mail a client is wrong - "user@virtualdomain.com"@mail.example.com, where mail.example.com is the hostname of my mail server.
The complete line in log file (real user and domains changed):

2010-08-10 11:37:07 1OikKS-0002Tp-M2 <= "user@virtualdomain.com"@mail.example.com H=([192.168.1.103]) [93.152.157.42] P=esmtpa A=plain:user@virtualdomain.com S=984 id=4C610FA8.7030309@virtualdomain.com

I googled for a few days untill I found no solution to this problem.
Please help if you have any ideas.

[falko]

Did you set the correct sender address in your email client?

[smartcall]

Everything is set in the client. I use other mail servers for other accounts and they work fine with similar settings.

[topdog]

You could have just searched howtoforge this issue is answered here http://www.howtoforge.com/forums/sho...4&postcount=83

[smartcall]

Thanks! That solved it. I should have searched howtoforge instead of Google, you're right.