My Outlook 2003 fails to send emails if they are original emails larger then half page, all reply emails, attachements files, or photographs. This problem has been present for email greater then 1MB (my ISP limit is set at 25MB) for some time, but have updated to svc pack 2 for XP and Office 2003, now I can virtually send nothing. I can send the test message and small original emails. I have maximized my time out setting without effect.
I have three computers on my LAN, all running XP with svp 2 - all three have the problem. I have uninstalled svp 2 on one computer, still had the problem. I have uninstalled my virus scan (McAfee), my firewall (McAfee) and the svp 2 firewall. Still had the problem. I have bypassed my router directly to the cable modem without a change. I have used outlook express setting up my email account and still have the problem. I have uninstalled and installed outlook, and even the entire Office 2003, without improvement. I have returned one of my computers to a set point two weeks ago, prior to the service pack installation, and still have the problem.
I have called my ISP provider. They are able to send large files using my account without difficulty. I ping their server without difficulty. My ISP says everything is working from their end. Even if I try to send emails from my ISP's webmail server, they will not send.
I contacted my local tech provider, payed him to come to my home, he was unable to identify the problem - BUT we were able to send email via a different ISP provider and that seemed successful.
I have reviewed several tech websites and have tried a few of their suggestions without improvement. Short of reloading XP and starting from scratch, I don't know what else to do. I'm looking forward to your suggestions.