I have just received my second 'Undelivered Mail Returned to Sender' in the last two days. Not normally odd. Sometimes I mistype or have an old e-mail address for someone. Yet this one is VERY strange!!! The return is purported to be coming from MAILER-DAEMON@linux.local (Mail Delivery System), and in the full header seems to be routing through artelecom.net in Romania. Here's the content minus the 2 attachments: ** This is the Postfix program at host linux.local. I'm sorry to have to inform you that the message returned below could not be delivered to one or more destinations. 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 message returned below. The Postfix program <dorin@localhost.linux.local>: host localhost[127.0.0.1] said: 451 4.5.0 Error in processing, id=06674-10, virus_scan FAILED: NO VIRUS SCANNERS AVAILABLE (in reply to end of DATA command) ** As I said there are 2 attachments with this notification. One is said to be the 'Delivery error report' of an unknown file type and 360 bytes in size. The other is said to be the 'Undelivered Message' of the type Email Message and 2.7 kb in size. I'm seriously freaked out by this coming through!!! NO I don't have spamassasin or Antivir setup. This is taken care of through my ISP. I get the occassional spam that makes it through, but I just delete it and go on with my life. This one really disturbs me!!! HELP!!! How can this be stopped at the source??? Bernd -- "If you want to build a ship, don't drum up the men to gather wood, divide the work, and give orders. Instead, teach them to yearn for the vast and endless sea." Antoine de St. Exupery