The following message to <info(a)hamburger-fh.de&gt; was undeliverable. The reason for the problem: 5.3.0 - Other mail system problem 550-'129.206.119.212 is not allowed to send mail from zapf.in. Please see the SPF record, with scope mfrom, identity stapf(a)zapf.in, and ip 129.206.119.212'