I implement Domino 7.0.2 server on Windows 2003 R2 .
All users use Domino by DWA ( WebAccess ) .
2 month passed , suddenly Mr. X could not send e-mail to external internet user . A.B.C@xxx.yyy.com.
Message is " no route found to domain xxxxxx.yyy.com Check DNS configuration ".
But other employee Mr. Y can send e-mail to A.B.C@xxx.yyy.com from DWA .
( He has the Notes account on the same Domino server )
And another employee Mr.Z can send e-mail to O.P.Q@xxx.yyy.com from DWA.
Is this personal setting problem ?
What should I check ?
I appreciate advice.