Client Cannot Send Mail in Outlook
I tested the clients outgoing mail from my own office, and it works fine. Therefore, there's nothing wrong with the server or host.
However, ALL of the computers in the clients office can only receive, but CANNOT send mail. He is using Outlook Express on all of them. It was working fine and this suddenly happened. No changes or change of ISP has occured.
He DOES have "my server requires authentication checked" (again nothing was changed)... as it should be.
Outlook is simply giving "Outlook cannot send mail bla bla bla error...". It's one of the usual outlook errors, with NO error code.
Any idea what the heck is going on or what I should try to do to solve it? I don't understand why it would happen on ALL of his office's computers, if it's not the host/server. Works fine from my location.
I'm stumped. I need to call him back at 3-4 PM EST to resolve this.
