Sorry this is so long but wanted to give as much detail as possible.
My internet provider (Comcast) has recently changed outgoing ports from 25 to 587. I changed all my comcast accounts to 587 and now can send and receive without problem.
I have 2 accounts that are not comcast. They go through a dedicated server which still uses port 25 for outgoing. These accts were working fine until a week ago when they stopped sending and I keep getting SMTP error reports. I contact comcast and they told me my modem has a port 25 block because of the amount of activity, I needed to use port 587. I contacted the person that manages our dedicated server, explained the problem and they added port 587 as an alternative port but I can still not send emails from either of the 2 accounts that go through the server from my house computers.
I have Outlook 2003 sp3, Windows Vista Business 32bit and Norton Internet Security with email scanning on. I tried turning the email scanning off but that did not resolve the problem. I have authentication checked in Outlook.
The error message I keep getting is:
Task 'Deb NHYFSC - Sending' reported error (0x80042109) : 'Outlook is unable to connect to your outgoing (SMTP) e-mail server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).'
I can use these accounts from any computer outside of my home without problems.
Can anyone please help me??