Hey Jim, this has been going on for weeks now - you need to fix your PTRs... May 3 19:12:12 mx2 sm-mta[97105]: h440CBD6097105: ruleset=check_mail, arg1=<owner-cypherpunks-outgoing@einstein.ssz.com>, relay=root@[207.200.56.4], reject=451 4.1.8 Domain of sender address owner-cypherpunks-outgoing@einstein.ssz.com does not resolve May 3 19:13:57 mx2 sm-mta[97104]: h440BtD6097104: from=<owner-cypherpunks-outgoing@einstein.ssz.com>, size=3267, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=root@[207.200.56.4] May 3 19:13:57 mx2 sm-mta[97104]: h440BtD7097104: ruleset=check_mail, arg1=<owner-cypherpunks-outgoing@einstein.ssz.com>, relay=root@[207.200.56.4], reject=451 4.1.8 Domain of sender address owner-cypherpunks-outgoing@einstein.ssz.com does not resolve May 3 19:13:58 mx2 sm-mta[97104]: h440BtD7097104: from=<owner-cypherpunks-outgoing@einstein.ssz.com>, size=7093, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=root@[207.200.56.4] May 3 19:14:13 mx2 sm-mta[97105]: h440CBD6097105: from=<owner-cypherpunks-outgoing@einstein.ssz.com>, size=2502, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=root@[207.200.56.4] May 3 19:18:46 mx2 sm-mta[97134]: h440IjD6097134: ruleset=check_mail, arg1=<owner-cypherpunks-outgoing@einstein.ssz.com>, relay=root@[207.200.56.4], reject=451 4.1.8 Domain of sender address owner-cypherpunks-outgoing@einstein.ssz.com does not resolve May 3 19:18:49 mx2 sm-mta[97135]: h440InD6097135: ruleset=check_mail, arg1=<owner-cypherpunks-outgoing@einstein.ssz.com>, relay=root@[207.200.56.4], reject=451 4.1.8 Domain of sender address owner-cypherpunks-outgoing@einstein.ssz.com does not resolve May 3 19:18:49 mx2 sm-mta[97135]: h440InD6097135: from=<owner-cypherpunks-outgoing@einstein.ssz.com>, size=11356, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=root@[207.200.56.4] May 3 19:18:57 mx2 sm-mta[97136]: h440IuD6097136: ruleset=check_mail, arg1=<owner-cypherpunks-outgoing@einstein.ssz.com>, relay=root@[207.200.56.4], reject=451 4.1.8 Domain of sender address owner-cypherpunks-outgoing@einstein.ssz.com does not resolve May 3 19:19:14 mx2 sm-mta[97145]: h440JED6097145: ruleset=check_mail, arg1=<owner-cypherpunks-outgoing@einstein.ssz.com>, relay=root@[207.200.56.4], reject=451 4.1.8 Domain of sender address owner-cypherpunks-outgoing@einstein.ssz.com does not resolve su-2.05b# nslookup einstein.ssz.co -- Yours, J.A. Terranson sysadmin@mfn.org