Question : Exchange Connector Individual POP Accounts versus Catchall

My client has an MS Exchange server within MS SBS 2003 Server Suite. They had been receiving mail directly to their server, their domain name which is hosted by a third party had its MX records pointed directly to their MS Exchange server.

However, a month ago I found that their server was heavily infected by viruses, one of which recently must have been a Trojan proxy relaying on spam, as a result they go blacklisted.

Yesterday, I signed up for a professional 3rd party hosting company ( Linux based) to host their email, for them. On that hosted account I setup a catchall.

There email seem to work until this morning, and now it is broken again and I am in serious s$%t as the who episode is dragging.

I notice by setting up individual accounts on the remote hosted server and popping them down to the customers individual inboxes, that this may be a work around, its not too big of a deal as they have only 14 staff.

Its beginning to look like they may also have an MS Exchange issue.  Does it make any sense that using individual pop accounts, rather than using a Catchall and one POP account, would make a difference?

Does any of this make sense?

Thanks,
Robert.

Answer : Exchange Connector Individual POP Accounts versus Catchall

Yes it makes the difference!!

I would suggest to have MX directing to Exchange on top priority and then catch all accounts (considering bandwidth or other infrastructre issues)...... But not individual POP3 accounts on ISP with/without using exchange!!

There are many articles you can refer to prevent spamming/relaying as well as using Antivirus. This will give you advantage of using all exchnage features and will prevent multiple point of failures if you are using Catch all or individual POP3 accounts.

This will also help if company expands to 140 ppl in 2 years......