Hello my friends. I am here with a question. I just imported a custom recipient list in my Exchange 5.5 Organization few weeks ago. The list had about 16.000 custom recipients (internet mail). Some few users reported that sometimes they send a message and it simply is not delivered to the recipient (which is actually one of those custom recipients). I have never had this kind of problem, but since I did the import some users started bothering me about it. Does anyone has a clue about it? Since I didnt change a thing in my Exchange, I suspect this large numbers of custom recipients might be an issue. Thank You. My best regards. > Dêniz Feital > GIC - Chiptek / Vésper > Tel 55 11 2121-6430 > > >