I have a customer who has a sbs 2003 server that currently use pop3 connector and i wish that they move over to smtp before i carry out a migration to sbs 2008. I know that i have to contact the isp and have them create a A record,ptr record and mx record pointing to the ip address of the of wan interface and a forwading rule for port 25 to the sbs server.Also the customers isp has backup mail servers with the relevent mx records,so no mail will be lost. What else do i need to do to ensure a smooth transtion? All suggestions and comments are most welcome!
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Migrate from pop3 connector to SMTP
- Thread starter MCSLOY
- Start date
Determine your public IP address
Create an A record in your public DNS for this IP address.
Use something like mail.domain.com. Wait for this to be done, and resolvable from the outside.
Configure port forwarding through your firewall for ports 25 (SMTP) and 443 (SSL - for OWA).
Verify from the outside that you can telnet to the A record over both ports, and that the server responds. Verify you can get to OWA.
Have the ISP create a reverse DNS record for your public IP address. It should match the A record if possible. Wait for this to be done, and resolvable from the outside.
If you have a 3rd party trusted SSL certificate installed, configure Exchange to use it for TLS.
Change the MX records to point to your A record first, and any backup servers the ISP has second.
Wait at least 48 hours. If all is well, kill your POP3 mailboxes, THEN kill the POP3 connector. IN THAT ORDER, as you want to make sure you get any email sitting in those POP3 mailboxes.
Ideally, you'd use ISA on a server in the perimeter network.
Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.
Create an A record in your public DNS for this IP address.
Use something like mail.domain.com. Wait for this to be done, and resolvable from the outside.
Configure port forwarding through your firewall for ports 25 (SMTP) and 443 (SSL - for OWA).
Verify from the outside that you can telnet to the A record over both ports, and that the server responds. Verify you can get to OWA.
Have the ISP create a reverse DNS record for your public IP address. It should match the A record if possible. Wait for this to be done, and resolvable from the outside.
If you have a 3rd party trusted SSL certificate installed, configure Exchange to use it for TLS.
Change the MX records to point to your A record first, and any backup servers the ISP has second.
Wait at least 48 hours. If all is well, kill your POP3 mailboxes, THEN kill the POP3 connector. IN THAT ORDER, as you want to make sure you get any email sitting in those POP3 mailboxes.
Ideally, you'd use ISA on a server in the perimeter network.
Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.
I agree with everything Pat has said but want to add one more item. You will likely get killed by SPAM. Currently your ISP is likely filtering stuff for you and you will lose that level of protection. 3rd party tools such as Postini or MXLogic work best but you can go the free route with IMF built into Exchange.
Make sure you have configured the server for SMTP tarpitting and have set IMF to get updates from Windows Update.
I have scripts available in my FAQ to configure these as well as provide a management interface for messages trapped by IMF.
faq955-6503
I hope you find this post helpful.
Regards,
Mark
Check out my scripting solutions at
Work SMARTER not HARDER. The Spider's Parlor's Admin Script Pack is a collection of Administrative scripts designed to make IT Administration easier! Save time, get more work done, get the Admin Script Pack.
Make sure you have configured the server for SMTP tarpitting and have set IMF to get updates from Windows Update.
I have scripts available in my FAQ to configure these as well as provide a management interface for messages trapped by IMF.
faq955-6503
I hope you find this post helpful.
Regards,
Mark
Check out my scripting solutions at
Work SMARTER not HARDER. The Spider's Parlor's Admin Script Pack is a collection of Administrative scripts designed to make IT Administration easier! Save time, get more work done, get the Admin Script Pack.
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