Hello guys! This is my first post here and I've been searching for two days now and can't seem to get a definitive answer. The problem: I installed Microsoft Exchange Server 2010 on a Windows Server 2008 R2 Enterprise. I chose HUB Transport instead of Edge. Everything works perfectly, except that I definitely need SMTP authentication, to avoid becoming a semi-open relay. But the problem is this: If I enable Anonymous Users in the Default receive connector I can receive mail from all over the world, but SMTP authentication is disable. If I disable Anonymous Users in the Default receive connector, e-mails from all over the world, naturally, get rejected but well, SMTP authentication is valid. So my question is: Is there some way I can enable SMTP authentication and still be able to receive e-mail from internet servers? Or better said, can this task be achieved without an Edge transport server? Thanks!

Why do you think you NEED authentication? Exchange 2010 is not, by default, an open relay. If you disable anonymous submission you, as you have seen, lose the ability to receive. What you need is a good anti spam package that drops all the nonsense that comes in. Unless you have POP3/IMAP clients you dont need to have people submit/relay in the first place and unless you do something that feature isnt even enabled. "Andreas Ruxanda" wrote in message news:e6e96abe-57cd-4c23-8fed-1deb94806988... Hello guys! This is my first post here and I've been searching for two days now and can't seem to get a definitive answer. The problem: I installed Microsoft Exchange Server 2010 on a Windows Server 2008 R2 Enterprise. I chose HUB Transport instead of Edge. Everything works perfectly, except that I definitely need SMTP authentication, to avoid becoming a semi-open relay. But the problem is this: If I enable Anonymous Users in the Default receive connector I can receive mail from all over the world, but SMTP authentication is disable. If I disable Anonymous Users in the Default receive connector, e-mails from all over the world, naturally, get rejected but well, SMTP authentication is valid. So my question is: Is there some way I can enable SMTP authentication and still be able to receive e-mail from internet servers? Or better said, can this task be achieved without an Edge transport server? Thanks! Mark Arnold, Exchange MVP.

Hi If you have a HUB that receives the mails from external then I would create a receive connector and give it a good name, match it with ip address and have it anonymous, because if you require authentication you can't receive any mails at all. Then you should have a spam solution installed on this machine, like Forefront for Exchange For double and better spam solutions, buy a 3rd part mailwashing service and let them wash the mails first and then send them to your server. In that way you can setup the receive connector to just accept connections from the 3rd part mailwashing service Jonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog

Hi, To receive the Internet email, the Anonymous Users is necessary. And the Exchange Server itself is not an open relay even though the Anonymous Users is checked since the ms-Exch-SMTP-Accept-Any-Recipient permission is not there on the Anonymous Users. Of course, the Exchange server will receive a great amount of spam emails which send to nonexistence user, then lots of the NDR will be generated. To reduce the spam email, you can use the Edge server or third party security software. Thanks AllenAllen Song

hi i have problem,please help me i cant set up my external and enternal email to my exhange2010 how can i do this??