Comments on: Exchange 550 NDR You are not allowed

By: labnuke99

labnuke99 — Wed, 28 May 2008 03:57:15 +0000

Check to see if the user has some type of rule or anti-spam software that rejects particular senders through a blacklist.

By: abccomputer

abccomputer — Tue, 27 May 2008 15:18:50 +0000

The only problem I have with that the account is blocked by the receiving domain is I own the mail server for one of the receiving domains, and the email address is not blocked. The user account is not locked as I can logon to any computer with the logon (the administrator account is one of them having issues).,

By: mrdenny

mrdenny — Tue, 27 May 2008 07:47:59 +0000

I agree. It appears that some of your users have had thier email addresses specifically blocked by the admin on the receiving domain. You’ll want to contact that domain and have them remove the lockout.