Hi, I am running exchange 5.5 sp4 on windows nt 4 sp6a. Our company works on high security data zone. Users are not allowed to send e-mails with more than 2MB attachment size. Communication to one of clients, requires that one of the users has to send e-mails with attachments of 5 MB size. If I increase the limit for this user, it will be a potential danger. One way is to allow the user to send e-mails with 5 MB attachment to the client's domain only and 2 MB to th world. Is there a way in exchage 5.5. Chand