I have four servers on 3 different DSL lines running RedHat 7.3 with sendmail 8.11.6 I was on vacation at the time, but mid-day (13:00) on January 9th all of them started behaving wierdly. Instead of the occassional email, perhaps 95% of all incoming emails now show in the log as follows: Jan 9 09:41:17 bach sendmail[25179]: NOQUEUE: mail5.schaeffer.com [24.106.95.27] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA Jan 11 00:02:12 bach sendmail[14018]: NOQUEUE: h11009.upc-h.chello.nl [62.194.11.9] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA Jan 11 00:10:44 bach sendmail[14127]: NOQUEUE: bay0-omc2-s35.bay0.hotmail.com [65.54.246.171] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA Jan 11 00:13:23 bach sendmail[14148]: NOQUEUE: root@localhost did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA Jan 11 00:13:50 bach sendmail[14151]: NOQUEUE: 84.95.106.53.cable.012.net.il [84.95.106.53] did notissue MAIL/EXPN/VRFY/ETRN during connection to MTA The first one is legitimate mail, the others appear to be spam Much of the 50K pieces/month of spam I get are being trapped at the server in this manner before even getting to my spam filters (a good thing), but while some legitimate email is getting through, some is being rejected with this kind of message. Does anyone (a) have any idea what's happening here (b) have any idea how to fix it. Need more info? Just ask. Dick