It can take a little while for the MX record deletion to propagate through the Internet. If you've done what you've said you've done the problem will probably go away in a day or two. It's too late now but it would have probably been better to change your NAT mapping so that the same A record's IP address pointed to your Exchange server instead of the Linux server. You could also add an alias table entry to redirect the new mailbox's mail from the Linux server to the Exchange server to stop the bouncing right away.
Ed Crowley MCSE+Internet MVP Freelance E-Mail Philosopher Protecting the world from PSTs and Bricked Backups!T -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Luke Cassar Sent: Tuesday, November 08, 2005 3:34 PM To: Exchange Discussions Subject: 550-Verification failed Hi All, I thought I posted this yesterday, but cant seem to find it, so if its duplicated or been deleted for some reason, please ignore. Basically we migrated a site from a linux mail system to an exchange mail system. The exchange system (2003) has its own dedicated internet connection, so when it went live, we simply created all of the mailboxes from the linux system on the 2003 system and changed the mx records for this companies domains to point to the 2003 mail server. Mail started comming in and going out, no problems. A new user then started who was only created on the 2003 exchange system. Most of their functionality is ok (can send and recieve to most recipients) but some of them do not work. We get an 550 Verification failed error. Initially it was different, and related to the MX2 failing to respond, so i have since removed all traces of the old mail system from the host records of their domains. In spite of this, the errors still occur. There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <server01.local #5.5.0 smtp;550-Verification failed for <[EMAIL PROTECTED]>> Its only happening sending to a handful of domains.. the majority of email is ok. Any ideas would be appreciated. _________________________________________________________________ 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] 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.
