Unable to deliver message

Hi All,

I have user’s problem in Notes Client within the same domain. When userA wants to send message to userB, it can’t be delivered. But, when I tried to send message to userB (which userA can’t)…it is delivered successfully.

Why some users can send message and some users cannot? Fyi, userA does not have problem in sending email to other users in the organization within the same domain.

Please advice…TQ

Subject: Unable to deliver message

Are the users in listed in same server ? or in diffrent server