I have an end-user that is using an iPhone and trying to sync with Exchange. I have enabled IMAP4 with SSL on the Exchange 2003 server and he is able to receive emails; however, he cannot send. To trouble shoot the issue, I have setup an OE account using the IMAP4 protocol and I as well am not able to send mail. This isn't a firewall issue because the account I set up on OE is behind our Fortigate. I'm not too sure if the errors are related, but given the fact that neither will send mail I'm assuming the issue is related. We have no trouble sending from Exchange. Additionally, there is no front-end back-end configuration.
Here is the error message that is being generated:
Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: 'exchange.dscicorp.com', Server: 'exchange.dscicorp.com', Protocol: SMTP, Port: 25, Secure(SSL): Yes, Socket Error: 10053, Error Number: 0x800CCC0F
Thanks in advance,