I've been tracking this problem for a client, and I need guidance on where to look to narrow it down. The problem reported is that emails sent to one company email address are not delivered to everyone on the distribution list. Is it quite random. Sometimes it will, and others not without apparent pattern.
They are running Small Business Server 2003. They use POP3 Connector to download email from two-dozen accounts across different domains and accounts.
For the purpose of this question the trouble address is email@example.com. This account is set up in the POP3 Connector to download from a web-host where the mailbox is hosted.
In Server Management > Distribution Groups, there is nothing listed.
In Server Management > Security Groups, there is a listing that is a Global Security Group that has firstname.lastname@example.org as its email address. There are six other users (company employees) who are Members of this group.
Is this set up right? What could be causing the failed delivery and where do I go to look for a log or track how this is failing.
An idea I had was to change the account password at the web host to rule out some other PC being set to download email before the POP3 Connector gets it.