Seems that Swisscom/bluewin's mail servers are blocking each other again, same problem happened on February 14.
Generierender Server: zhhdzmsp-smtp12.bluewin.ch
*xxx.yyy@bluemail.ch* denise.beele@bluemail.ch mxbw.bluewin.ch #<mxbw.bluewin.ch #5.0.0 smtp; 554 IP: 195.186.136.31, You are not allowed to send us mail. Please see * http://www.dnsbl.manitu.net/lookup.php?value=195.186.136.31*http://www.dnsbl.manitu.net/lookup.php?value=195.186.136.31if you feel this is in error.> #SMTP#
Last time zhhdzmsp-smtp12 was even blacklisted for SPAM.
Anyone else get the same problem?
Florian