We are on Exchange 2007 SP1, We have setup 3 email addresses. user1@domain.com user2@domain.com user3@domain.com We have 5 accepted domains within our exchange environment. We need to setup rules such that the above 3 email addresses will receive emails ONLY from within our Exchange Environment and Accepted Domains. Any email from an external domain must bounce. Please advise how I can set this up. Thank You Philip

Exchange 2007 SP1 is no longer supported. You should upgrade to Exchange 2007 SP3 with rollup 7. Do you have external users sending email as the accepted domains? If not, then just configure a rule for that allows email from internal users only. That is in the rules wizard. Otherwise your options are going to be to look at the headers only, although that will not stop spoofed spam from also being delivered to the mailboxes. Simon. Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Exchange 2007 SP1 is no longer supported. You should upgrade to Exchange 2007 SP3 with rollup 7. Do you have external users sending email as the accepted domains? If not, then just configure a rule for that allows email from internal users only. That is in the rules wizard. Otherwise your options are going to be to look at the headers only, although that will not stop spoofed spam from also being delivered to the mailboxes. Simon. Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

The simplest thing to do is setup a ethical wall for only these 3 users using transport rules.Sukh

The simplest thing to do is setup a ethical wall for only these 3 users using transport rules.Sukh

On Wed, 20 Jun 2012 07:35:25 +0000, sphilip14 wrote: >We are on Exchange 2007 SP1, > >We have setup 3 email addresses. > >user1@domain.com > >user2@domain.com > >user3@domain.com > >We have 5 accepted domains within our exchange environment. > >We need to setup rules such that the above 3 email addresses will receive emails ONLY from within our Exchange Environment and Accepted Domains. Any email from an external domain must bounce. > >Please advise how I can set this up. Are there any SMTP clients on your LAN that send e-mail to these mailboxes? If not, try checking the "Require that all senders are authenticated" box on each mailbox. If that doesn't work, give each of them SMTP proxy addresses only in the domain.LOCAL domain and then obfuscate the addresses to use something like "ajkhdjfjenhEIUAPOJCNNoi5iqp3oiQ($)'^*'&*+@domain.local". :-) --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

On Wed, 20 Jun 2012 07:35:25 +0000, sphilip14 wrote: >We are on Exchange 2007 SP1, > >We have setup 3 email addresses. > >user1@domain.com > >user2@domain.com > >user3@domain.com > >We have 5 accepted domains within our exchange environment. > >We need to setup rules such that the above 3 email addresses will receive emails ONLY from within our Exchange Environment and Accepted Domains. Any email from an external domain must bounce. > >Please advise how I can set this up. Are there any SMTP clients on your LAN that send e-mail to these mailboxes? If not, try checking the "Require that all senders are authenticated" box on each mailbox. If that doesn't work, give each of them SMTP proxy addresses only in the domain.LOCAL domain and then obfuscate the addresses to use something like "ajkhdjfjenhEIUAPOJCNNoi5iqp3oiQ($)'^*'&*+@domain.local". :-) --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Hi Philip, Any update for your issue? Regards!Gavin TechNet Community Support