5.1.1 e-mail account does not exist at the organization
Hope you will be able to assist me on the following – Apparently we were hosting “domain.com” in our AD alongside our primary domain – Gryphtech.com Now that they have deleted the domain from the AD – they are unable to send email to anyone at “domain.com” Whenever an email is sent to a user@domain.com [...]

Answer Question   |  December 15, 2010  7:45 PM
5.1.1 Error, Active Directory Domain, Domain management, Exchange 2003, Exchange 2003 administration

Exchange relays to the SMTP server but the TO field in the email can’t be resolved by the SMTP serve
I have Eroom running IIS smtp server in order for the app to receive mail. The problems seem to be: 1. Exchange relays to the SMTP server but the TO field in the email can’t be resolved by the SMTP server because it will say From: Bob smith rather than Bsmith@maindomain.com 2. Outlook will put [...]

Answer Question   |  November 18, 2008  3:25 PM
5.1.1 Error, Exchange Relay to SMTP Server, Exchange Server, IIS, Outlook, SMTP server