CASmail -> not a valid mailbox (12.Jul.2006 4:01:52 PM)
While trying to send an email to a known email address I get this error
The following recipient(s) could not be reached: 'username@domain.com' on 7/10/2006 8:08 AM The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address. <server.domain.local #5.1.1 smtp;550 5.1.1 username@domain.com> is not a valid mailbox
Now I know that the email address is valid because I can send the user an email from yahoo mail.
Our current setup is Windows 2000 server with Exchange 2000
Any suggestions would be greatly appreciated - Thanks
pdowdle -> RE: not a valid mailbox (30.Jul.2007 10:10:28 PM)
I would like to know if you got this resolved, cause I have the same problem If I resend the email it works fine, it just seems to be random
uemurad -> RE: not a valid mailbox (30.Jul.2007 11:32:36 PM)
Do you have more than one MX record? Perhaps in a load-balancing configuration?