A small puzzler for y'all We have one domain, 1 back-end Ex2K Sp3, 2 front-end Ex2k Sp3 (for OWA), 2 Server with SMTP for inbound/outbond mail routing& redundancy. 95% of all mail is routed fine. But here's an example of when it doesn't. I'm on this list serv, and if 25 [ExchangeList] mails are received 2 or 3 of them will not get through and the postmaster(me) will get this error. (A configuration error in the e-mail system caused the message to bounce between two servers or to be forwarded between two recipients. Contact your administrator.) <mail.ogh.org #4.4.6> Any ideas on what I might look for? It only seems to appear on list serv type messages. - Doug _________________ Confidentiality Notice: The information contained in this message may be legally privileged and confidential information intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, you are hereby notified that any release, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error please notify the author immediately by replying to this message and deleting the original message. Thank you.