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I have EspoCRM and Dovecot/Postfix on the same server. I have multiple email clients connecting IMAP to the dovecot server without error.
In EspoCRM I cannot connect IMAP to port 143 or 993, both of which work externally.
On the EspoCRM/Dovecot server I can command line "openssl s_client -connect mail.server.com:993" without error, confirming that it does resolve the name and connect properly.
What troubleshooting, or changes can I make to help resolve the problem? Looking at the logs with DEBUG level does not reveal a cause. The dovecot server never logs the interaction. So the trouble seems to be EspoCRM not resolving the name somehow. But everything else on the server resolves properly. Also, it is same behavior if I use "localhost" as the server.
In EspoCRM I cannot connect IMAP to port 143 or 993, both of which work externally.
On the EspoCRM/Dovecot server I can command line "openssl s_client -connect mail.server.com:993" without error, confirming that it does resolve the name and connect properly.
What troubleshooting, or changes can I make to help resolve the problem? Looking at the logs with DEBUG level does not reveal a cause. The dovecot server never logs the interaction. So the trouble seems to be EspoCRM not resolving the name somehow. But everything else on the server resolves properly. Also, it is same behavior if I use "localhost" as the server.