Internet issues with a mail server (like SBS 2008's Exchange Server) will depend on your ISP and the type of account you have. With Home-level Internet accounts, there may be rules or actual blocks of TCP Port 25 inbound or outbound. Sometimes firewall blocks can be worked around using the ISP's smarthost services (if they exist).I'd also like to learn more about SBS and other servers in general, although I wonder if this act will throw red flags for a home ISP. I'm not trying to violate any TOS, although I'd really like to learn more and you can only go so far in SBS 2008 without an external domain (RWW, etc). It isn't about hosting the domain so much as learning about what SBS 2008 is capable of.
My SC440 worked fine with 8 GB of Kingston ECC non-buffered memory. Note that the SC440 won't work with non-ECC memory.It's a low-end SC440, but I'm considering going from 4GB to 8GB of RAM since it's decidely slow. Although the specs list 4 as the max, a few people over at newegg have been successful with certain ram.