Sikerült meholdani a problémát… elírtam a /etc/mailname -t kicsit izzó, de már megy.

a levelezés megy viszont a c2 visszadobja a leveleimet ezzel:

This is the Postfix program at host $myhostname.

I’m sorry to have to inform you that your message could not
be delivered to one or more recipients. It’s attached below.

For further assistance, please send mail to

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The Postfix program

: host mail.c2.hu[193.202.88.6] refused to talk to me:
    550-Invalid HELO.  You must be spam or a virus, or your system
    administrator is 550 an idiot.

Reporting-MTA: dns; $mymailname
X-Postfix-Queue-ID: CBA0616FA6
X-Postfix-Sender: rfc822; $myusername@$mymailname
Arrival-Date: Fri,  7 Apr 2006 16:47:49 +0200 (CEST)

Final-Recipient: rfc822; $myusername@c2.hu
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; host mail.c2.hu[193.202.88.6] refused to talk to
    me: 550-Invalid HELO.  You must be spam or a virus, or your system
    administrator is 550 an idiot.