DNS resolution works for the one but not the other????
It's a guess.
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Start looking at the exact error message. Usually it tells you that it timed out while connecting or downloading or something. After that, start looking at DNS and firewalls
Thank you both for your responses. I am trying to access the same account from both servers, so DNS is not a likely culprit. The only reason I'm trying two servers is because when the first one didn't work, I tried it on another to see if it would there, and it did.
The exact message is that it's timing out -- but this only happens on the first server.
I have been in contact with the ISP to see if there is some other IP routing / firewall issue that could be the problem, but it's rather unusual. This ISP (AccuFind) is a pro at ColdFusion hosting and they always have things set up correctly right off the bat.
Back up slightly.
Can you PING the mail server from the CF server that isn't connecting?
Sorry for taking so long to get back to you. In my mind I had answered you right away, but I guess I had become distracted and never posted the results.
Yes, I am able to ping with results that are the same on both servers, from within the servers themselves.
This is becoming quite an annoying little problem. It's got to be something in the ISP's firewall or server setup somewhere.