I recently setup an SBS 2008 server from scratch. Our previous server was SBS 2003. I have always been using the POP3 Connector in order to download our email into Exchange. Our company's public website is hosted elsewhere, and we use their spam filtering on our email. I also wanted to make sure we could still use our email in case the server went down. I have a few Questions:
1. If I switch to making our SBS server the direct SMTP server that receives our mail, will that mean that we will lose email if the server is turned off? Like if it is rebooting for an upgrade. Will the referring email servers hold the mail until they can reach my server, or will it be lost?
2. What are the advantages, disadvantages to direct SMTP over just using POP3 Connector (other than the obvious instand retrieval, versus the annoying 15min intervals).
Second thing to note, I want the email to send out as email@example.com (where companyname.com is our public domain), so I set companyname.com as the domain for the server in the "Setup Internet Address wizard". But now it assumes that remote.companyname.com is how you access the server. I really don't want that kind of public exposure of our server, so I didn't setup remote.companyname.com on the DNS records side. Wouldn't it get indexed on google? Isn't that some kind of security risk? Currently I decided to use DynDns.org for easy access to remote web workplace. Also, since our public ecommerce website is on our Hosting service, how would I set the remote domain name on the server? I'm quite confused about why remote web access and exchange can't be split into different domain names. They seem like different functions, shouldn't they be separate domains?
3. So, many components on the server seem to be confused, since I am basically lying about the domain name of the server (Sharepoint is having errors indexing). Should I let it be remote.companyname.com, or can I set it up to know that the remote access comes through a different address, say remoteaccesscompany.com?
SUMMARY OF QUESTIONS: Should I be setting up SBS as the direct SMTP mail server instead of using POP3 Connector and how should I deal with remote access with my main domain name being on a hosted server?
Thanks for any best practices thoughts! Just trying to figure out the best way to do things!