553 allowed rcpt host bounces?

[rossgile]

Hi,

I have several clients that complain about receiving these kinds of bounces after they send e-mails.

How do I fix:

To: some name (name@some-email.com)
Subject: Undeliverable: some subject

Your message did not reach some or all of the intended recipients.

Subject: 902 Bay 11 Change of Scope
Sent: 10/4/2005 11:18 AM


The following recipient(s) could not be reached:


Some Name (name@some-email.com) on 10/4/2005 11:18 AM
553 sorry, that domain isn't in my list of allowed rcpthosts
(#5.7.1)

 

[jamesyeeoc]

Assuming that 'some-email.com' is not hosted on your server, then most likely your client needs to have their mail client (Outlook?) setup for "My Server Requires Authorization" option.