Anyone know what this means?

[Paul]

Hi folks, just helping a guy out in a forum I go to.

His ? is:

Hi

I'm trialling Office 2007 (120 day trial). In Outlook I can receive messages
okay but whenever I reply to a message or send a new one I get the following
error message on an undeliverable 'system administrator' message:
501 #5.1.1 bad address

The addresses I'm e-mailing are all okay so I can't figure it out.

Does anyone know?

Any info appreciated

Thanx

 

[Vince Averello [MVP-Outlook]]

Does the person have their outgoing mail server setup correctly in their
mail account?

 

[Paul]

Checking with the guy now.

I post his reply, once he posts one.

I can give u the forum URL, if you want
to reply directly to it??

Let me know. Ta.

 

[Paul]

Yup he said:

Yes I do -- one of the 1st things I checked.
Any other suggestions?