Hi there, we've been using zoho CRM for a while and have grown to like the functions it has but at times their support is unable to help resolve issues like this one, which probably isn't their fault, it's probably just not possible the way their software is written, so I'm looking at reconfiguring my setup to suit.
Ok, according to the zoho gurus, they will only accept 995 and 110 for POP and 25, 465, and 587 for SMTP.
Our setup is 2008 SBS with Exchange Server 2007 just below SP2 with 2 Hubs
default receive connector
uses TLS and LDAP
uses white list IP addresses
Accepting on 25, 26, 465 587 to send
Relay connector(had to be used for our PBX to send voicemail to email)
Accepting on 2525 to send
Here is where the problem lies I believe, I know we have a soft fail on the SSL that was used, as it's expired and we'll be moving everything up to Google in a couple of months, so to save some bucks it wasn't renewed. On all the Outlook POP configurations the user simply accepts the certificate and we run with 995 and 465 for just about everyone with no trouble. The problem here is that, I've white listed the IP address of the ZOHO server but the ZOHO software doesn't have any exceptions handling built in to take the soft failing certificate.
So, the 500 point question is, which connectors should I modify (or should I create a new one) to make this work given the only ports that ZOHO will approve of using and keep down the risk of someone catching me in an open relay scenario.