Double check mxlogic's set up for lcms.org. They must be sending it to a different IP or handling it different somehow. That is the only explanation I can think of.
I did notice the MX records for the two domains are different. Same servers but in a different order. Perhaps there is an error on the first server in the record for lcms.org. > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:bounce- > [EMAIL PROTECTED] On Behalf Of Larry Wahlers > Sent: Tuesday, April 03, 2007 2:03 PM > To: Exchange Discussions > Subject: RE: Bounces and mail loops > > Thanks, Jim. Yes, this is interesting. Ultimately you'll see the other > domain bounce from [EMAIL PROTECTED], which is actually me. > But, I haven't set mxlogic up to do anything different depending upon > whether mail is sent to concordiatech.org or lcms.org. In fact, > ultimately mail to both orgs goes to the same IP address. > > Larry Wahlers > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On > > Behalf Of Kennedy, Jim > > Sent: Tuesday, April 03, 2007 12:35 PM > > To: Exchange Discussions > > Subject: RE: Bounces and mail loops > > > > I just sent to both of those addresses.. concordiatech > > bounced instantly. BUT the bounce message came from > > [EMAIL PROTECTED], not your exchange > > server. I have not seen the other domain bounce yet. > > > > Do you have mxlogix set up to get/query you directly for the > > concordiatech domain addresses and not the other? > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] [mailto:bounce- > > > [EMAIL PROTECTED] On Behalf Of Larry Wahlers > > > Sent: Tuesday, April 03, 2007 1:11 PM > > > To: Exchange Discussions > > > Subject: Bounces and mail loops > > > > > > Hello esteemed colleagues, > > > > > > Cutting to the chase, when I send an email message from an external > > > account to [EMAIL PROTECTED] I get an > > immediate hard > > > bounce with an error "550 5.1.1 User unknown" This is the > > behavior I > > > expect. > > > > > > If I send the same message to [EMAIL PROTECTED] the message > > > bounces back and forth between our Exchange server and our external > > > anti-SPAM proxy (MX Logic, provided by Mailstreet), and > > after an hour > > > or so, gets returned with this error: > > > > > > "Unable to deliver message to the following recipients, because the > > > message was forwarded more than the maximum allowed times. > > This could > > > indicate a mail loop." > > > > > > [EMAIL PROTECTED] > > > > > > > > > Yet, all email for both orgs goes through Mailstreet before > > it gets to > > > our Exchange server. And, in ESM Default Recipient Policies > > I have the > > > checkbox checked on "This Exchange Organization is > > responsible for all > > > mail delivery to this address" for both @concordiatech.org and > > > @lcms.org. (I might add that @concordiatech.org is the default SMTP > > > address for the Exchange organization.) > > > > > > So, why don't I get a hard bounce on bad lcms.org addresses, as I > > would > > > expect to get? > > > > > > -- > > > Larry Wahlers > > > Concordia Technologies > > > The Lutheran Church - Missouri Synod > > > MailTo:[EMAIL PROTECTED] > > > Business Phone: (314) 996-1876 > > > > > > _________________________________________________________________ > > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > > Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange > > > To subscribe: > > http://e-newsletters.internet.com/discussionlists.html/ > > > To unsubscribe send a blank email to [EMAIL PROTECTED] > > > dl.sparklist.com > > > Exchange List admin: [EMAIL PROTECTED] > > > To unsubscribe via postal mail, please contact us at: > > > Jupitermedia Corp. > > > Attn: Discussion List Management > > > 475 Park Avenue South > > > New York, NY 10016 > > > > > > Please include the email address which you have been contacted > with. > > > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange > > To subscribe: http://e-newsletters.internet.com/discussionlists.html/ > > To unsubscribe send a blank email to > > [EMAIL PROTECTED] > > Exchange List admin: [EMAIL PROTECTED] > > To unsubscribe via postal mail, please contact us at: > > Jupitermedia Corp. > > Attn: Discussion List Management > > 475 Park Avenue South > > New York, NY 10016 > > > > Please include the email address which you have been contacted with. > > > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange > To subscribe: http://e-newsletters.internet.com/discussionlists.html/ > To unsubscribe send a blank email to [EMAIL PROTECTED] > dl.sparklist.com > Exchange List admin: [EMAIL PROTECTED] > To unsubscribe via postal mail, please contact us at: > Jupitermedia Corp. > Attn: Discussion List Management > 475 Park Avenue South > New York, NY 10016 > > Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. 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