This problem is
not limited to Apple mail. I have intermittent problems when sending mail from both from Outlook 2003 on Windows and from my iPhone -- when using SSL with SMTP.SECURESERVER.NET on port 465.
The problem goes away if I turn off SSL and use ports 80, 25 or 3535. But, obviously, this is not a good solution.
I do
not have this problem with SSL connections to SMTP servers from GMail.
Clearly something to do with Godaddy, though they may be right in trying to blame our ISP's. Some ISP's like mine (Cox) are wary of people using their connections to send spam, and try to filter connections to SMTP servers that they do not control. Cox may be targetting Godaddy specifically because they are a favorite of spammers (as well as legitimate users.)
But note that to use the Godaddy SMTP server in SSL mode, your mail program must supply a username/password. So it is not an open relay. So I don't know why Cox would mess with it. I also don't know why the problem would be intermittent if cox was filtering.
One thing that has not been mentioned on this thread, but is probably not a factor: With a Godaddy mail account, the administrator must allocate a number of daily SMTP relays to the mail account for it to work. In my case, I have more than enough allocated, but still have the intermittent problems. And, as I mentioned, they go away if I turn off SSL and switch to one of the other ports.
Anyway, just my 2 cents. Take it from this windows and iphone user, it is NOT apple mail!
PS: I want to clear up one piece of confusion in this thread: With the Godaddy SMTP server, if you are using SSL, you must use port 465. The other ports mentioned (80, 25, 3535) only work if SSL is turned off.
Message was edited by: caa100