> Is this failure on my end or the other end. I can never tell. Its > only happening to one mailserver and from one user so I ASSUME the > other but not sure. thanks
None of those messages are Imail messages (quite brutal, aren't they?)...but if this is the only user sending to that domain, they could have that username on a private kill list or your IP on a public/private blacklist, both of which would still be your problem (in a sense). Go to www.dnsstuff.com and see if you're listed, and try to contact them if you're not. The 'Recipient List: (null)' has the ring of a server that rejects Bcc:-only mail, but that's just conjecture. Find out what kind of mail the user is trying to distribute, and if there's anything spammy about it (mailblasting MUA, etc.), you'll have a better grip on what could be going on. Or the recipient address just doesn't exist or doesn't accept mail--the clearest answer! Sandy Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/
