Who would’ve thought that I’d have to open up UDP port 4310 on a Sonicwall firewall to get IMAP working on a new Windows Server 2008r2?
All was fine with the same server software on an old Windows 2000 Server behind the same firewall. We’re talking about moving a DNS record and a few gigabytes of user inboxes here, not having to diagnose a completely new non-standard port.
As usual, no decent site exists for explaining just what port 4310 really is. Most search results are link bait or lead to useless sites. Note: I even consider Experts-Exchange useless.
One of these days I’m going to start an actually useful IT site or forum if this keeps up. Even Microsoft’s own Technet is riddled with 404′s and badly written content for most of the admittedly obscure errors I’ve run into over the years.
Anyway, port 4310 is for the “Mir-RT exchange service” which I assume means Exchange (the Microsoft email server). Makes sense until you consider that I’m not using Exchange at all. All third-party this time. Apparently that port had to be open on our firewall to get normal IMAP with SSL working on a Windows 2008r2 Server. If this is standard in any way nobody has it documented.
Until now.
UDP Port 4310
Who would’ve thought that I’d have to open up UDP port 4310 on a Sonicwall firewall to get IMAP working on a new Windows Server 2008r2?
All was fine with the same server software on an old Windows 2000 Server behind the same firewall. We’re talking about moving a DNS record and a few gigabytes of user inboxes here, not having to diagnose a completely new non-standard port.
As usual, no decent site exists for explaining just what port 4310 really is. Most search results are link bait or lead to useless sites. Note: I even consider Experts-Exchange useless.
One of these days I’m going to start an actually useful IT site or forum if this keeps up. Even Microsoft’s own Technet is riddled with 404′s and badly written content for most of the admittedly obscure errors I’ve run into over the years.
Anyway, port 4310 is for the “Mir-RT exchange service” which I assume means Exchange (the Microsoft email server). Makes sense until you consider that I’m not using Exchange at all. All third-party this time. Apparently that port had to be open on our firewall to get normal IMAP with SSL working on a Windows 2008r2 Server. If this is standard in any way nobody has it documented.
Until now.