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Error 554 Mailbox unavailable - 16.Aug.2001 3:06:00 PM

Bear

Posts: 31
Joined: 21.Feb.2001
From: Johannesburg, Gauteng, South Africa
Status: offline

I have a very strange situation here, and I really can't afford to lose any more hair :-P

I have an Exchange 5.5 machine accepting mail for domain A. Yesterday I had the MX record for domain B pointed to the same Exchange server that is accepting mail for Domain A. Life is good, MX record update successfull.

Today, I open the IMS, and add domain B to the Routing Tab, and list it as inbound. I stop and start the IMS. Life is still good, but I'm being lulled into a false sense of security.

I create a new mailbox to test my plan. and pop off a mail to test@domainA.com. Delivery! Mail Box works! I open the properties of the test mail box and in the e-mail addresses tab, I add test@domainB.com, and set the test@domainB.com address as the default reply address. Fire off a test mail to test@domainB.com. FAILURE!

Error message reads as follows.

Failed to deliver to 'info@domainB.com SMTP module(domain domainB.com) reports: host domainA-exch1.domainA.dmz.domain.com says: 554 Mailbox unavailable.

Now RFC 1893 lists SMTP error 5.5.4 as

A valid mail transmission protocol command was issued with invalid arguments, either because the arguments were out of range or represented unrecognised features.