I run a server with Debian 5, ISPC3 and Postfix. I have an OSCommerce installation that sends emails either by mail() or sendmail (it doesn't matter how). The mail gets rejected by the mailservice gmx.net here is the log: who can please help me diagnose this problem?
Looks as if you dont have a fully qualified domain name in your postfix configuration. Check postfix main.cf and /etc/mailname that they contain a fqdn for example mail.yourserver.com and not just mx056
thank you - I rummaged everywhere on the server and saw a faulty MX entry in the DNS. Somehow it had two trailing points instead of one. Inexplicably, the domain was working fine inspite of faulty DNS entries.
