Interesting, he sent me today copy of error messages that he got from PI4TUE. Here we go : "This is the mail system at host mailhost.tue.nl. 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 postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <sp8dxz@xxxxxxx>: host mx.poczta.onet.pl[213.180.147.146] said: 554 5.7.1 <sp8dxz@xxxxxxx>: Recipient address rejected: Spf check: fail (in reply to RCPT TO command)" so from what I can say, spam filter rejected that email. is that correct?? Robert KB2PNM