Software

Ask something
Discussion Locked

Prevent sending to certain domains

0 helpful
7 replies

by moonshinew

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.
Our email is hosted by an outside ISP (no Exchange). I need to prevent any user from accidentally sending email to any user at a certain domain. Instead of going to every single address book and deleting addresses at "that company", is there a wayto block anything going out to that entire domain?

7 replies

by moonshinew

Sorry - realized I didn't leave much detail. All clients are running either 98 or 2k. All email clients are either Outlook or Outlook Express. Boss wants me to delete all addresses in all clients' address books that go to this particular domain.While that's a short-term, it's impractical physically, and what's to prevent users from adding them back in? So, if there's a way to reject mail that's addressed to that domain, that's what I'd prefer. Simple 3Com firewall installed that can forbid domains, but don't think that will work with email, just surfing.

Thanks in advance.

by darthkim

What you can do is setup a internal SMTP server and force all email to pass through the smtp server.

This way you can set policies and enforce them from one unit. You could prevent delivery of "that company" domain on the internal SMTP server.to prevent users sending email through another server, make sure you only allow smtp traffic from the interna smtp host. (you can add the rule on your firewall)

by darthkim

IF you have your own internal DNS server, you could setup a zone for the domains you wish to block. Since you mentioned that this would be temporarily, that should work.

by nettek

This is difficult to do without your own mail server. I would check with your ISP to see if they can do what you request.

This discussion is closed to new replies.