Hi, I have two computers both with Outlook 2003 in an office that are doing the same thing. Both were installed OEM with the new machine from different vendors. The problem is when an email is sent, it goes to Sent Items but the recipient never receives it.
The machines in the office all share a T1 using WinXP Internet Connection, so they all have IP's of 192.168.0.x, and ZoneAlarm is installed on this machine. Ive turned ZA off and still have this problem. I dont think it has anything to do with this Internet setup however because all other versions of Outlook work. Most users (about 30 of them) are on Outlook 2002 and some on Outlook Express, and none of them have sending problems.
One thing to consider is everyone has 4 accounts that are on a laptop, 1 for office send/receive, 1 for home send, 1 for a virtual voicemail box and 1 for a virtual fax box. So if someone leaves a voice mail or fax they receive it as an email.
My thought is that having multiple accounts in Outlook 2003 is doing something to effect the way the app sends emails. This is just a guess, but I've never seen an email go into Sent Items but not actually be sent, unless it was a firewall problem.
So things Ive already tried is configuring Outlook Express on both machines and that did send. I then took off Outlook 2003 and put on 2002 and that worked also. I then took 2002 off and put 2003 back on and still the same problem. I did this on both machines and they both used different Outlook 2003 discs, so dont think its a faulty disc. Ive tried emailing from the user to himself and same problem. So I dont think its anything to do with the email server.