we have a windows 2003 network with Exchange 2003. Could someone tell me the difference between using a smart host and dns routing. And how would you select the correct one. Thanks
On Thu, 6 Mar 2008 07:56:02 -0800, jdt at acn wrote: >we have a windows 2003 network with Exchange 2003. Could someone tell me the >difference between using a smart host and dns routing. And how would you >select the correct one. Thanks If you have a dynamic IP address from the ISP then you pretty much have to use a smarthost (i.e. the SMTP relay at your ISP). If you have a fully fixed IP (is there any other type of fixed than fully fixed? sorry) then you are far more likely to use direct sending; i.e. doing a DNS lookup and sending to the returned MX record.
jdt at acn wrote: > we have a windows 2003 network with Exchange 2003. Could someone tell > me the difference between using a smart host and dns routing. And how > would you select the correct one. Thanks In addition to Mark's reply - using a smarthost may delay your delivery (if you're relaying your mail through a busy server) or preclude it (if the smarthost is on a blacklist). It also means you can't track your message delivery from end to end. All you can do is track that it was delivered to the smarthost. This is often a pain. If you don't have to use a smarthost, don't - if you have a static IP and a PTR, you should be able to send out directly, as mother nature intended. :-)
