Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

I know that you can configure Exchange to allow connections using IMAP and POP.

But is there a way to let IMAP clients access an Exchange mail box, without changing any settings on the target Exchange server?

I'm up for any ideas, including if you can set up some kind of bridge server in the middle that loads mail as an Exchange client and sets up an IMAP-accessible server.

share|improve this question
4  
Unfortunately, this sounds like an end user question asking how to get around their IT department for IMAP access to Exchange in order to use an unsupported client on their network. Sadly, this is the wrong place to ask such questions but a simple answer for you would be to forward all your mail to gmail or something that allows IMAP but then I'm guessing you're going to get yourself into even more hot water with your IT department. –  Kevin Kuphal Jun 4 '09 at 17:08
3  
Not quite. Without going into too much detail, the gist of it is that we access email accounts at several hundred different companies, all with their own setups. Most of the time we're able to get forwarding and/or IMAP access set up, but in some instances it is a major project to get our customer's IT to make any changes to their Exchange servers. –  Martin M Jun 6 '09 at 18:44
add comment

5 Answers

up vote 6 down vote accepted

DavMail.SourceForge.net works for me.

share|improve this answer
    
I use DavMail myself. I haven't used the IMAP part as my exchange server supports imap already, but the calendar part works well. –  sherbang Dec 11 '09 at 2:29
1  
I came back to say that DavMail works absolutely beautifully. I haven't checked back here in a while as I was a bit turned off by the dismissive answers I got from others here, but I independently found DavMail and it's been working great for our needs. As long as you have OWA access you're good to go and can use any client to work with mailboxes using standard IMAP. –  Martin M Apr 29 '10 at 20:17
add comment

The only "change" to the Exchange server for IMAP would be to turn on the IMAP service (in exchange 2003) and ensure that the user is enabled for IMAP access. I think the process is very similar for 2007. Both support IMAP as an access method out of the box.

share|improve this answer
    
Yep, just remember that on Exchange 2007 the ports for IMAP are different since they are secure. "By default Exchange 2007 requires SSL/TLS secured connections, which means ensuring the client connects to the secured port. For IMAP4 that port is 993 and for POP3 it is 995." –  Hondalex Jun 4 '09 at 17:10
add comment

I suppose somebody could write a MAPI (the "native" API that Outlook "speaks" to Exchange) to IMAP gateway, but seeing as how Exchange already has one built-in, I'm not sure why you'd want to.

With Exchange 2003 you can do "Front End" Exchange Server computers that talk the IMAP protocol to clients and get mail from a "Back End" Exchange Server computer storing the mail.

With Exchange 2007 you can deploy a server with the Client Access Role to do the same thing.

Can you clarify what you're trying to do?

share|improve this answer
    
I'll be the first to say that I'm not the best Windows admin out there. I looked into using Front End servers, but it seems as if the FE server needs to belong to the same forest and Exchange org. as the BE server. I don't know if that's possible in this case. Basically, we need to retrieve email from Exchange servers that are only accessible via MAPI where we only have user access, and somehow deliver the mail to IMAP clients. Since we need to get mail from multiple servers we can't use Outlook. –  Martin M Jun 6 '09 at 18:56
    
Sounds really, really convoluted. I don't think you're going to find anything that works well w/o contracting with somebody to write custom code. Good luck. –  Evan Anderson Jun 6 '09 at 23:09
add comment

If you can only access the Exchange Server via MAPI, and I'm assuming this is the case here, you want IMAP access but aren't able to access the Exchange server via IMAP, and you can't get it turned on, then you would need something in the middle that is able to connect to the server via MAPI and then translate this into IMAP to pass on to the IMAP client.

You could perhaps use something like FetchMail to get the mail off the Exchange server and forward it to an IMAP enabled server.

Whatever you do is going to be a bit of a cludge though, your best bet is to try and convince your admins to enable IMAP.

share|improve this answer
    
Something like Fetchmail would be great, unfortunately it doesn't seem like it supports fetching mail via MAPI. I definitely agree it is a kludge, but it's worth looking into for us. –  Martin M Jun 6 '09 at 18:52
add comment

Might want to a look at OpenMAPI.org. They have the beginning of an IMAP/MAPI gateway.

share|improve this answer
    
Thanks! I don't know if it's production-ready, but I'll definitely play around with it. It seems as if there was a Google Summer of Code project to add MAPI support to Fetchmail in 2008, but it doesn't seem to have been finished: wiki.openchange.org/index.php/Fetchmail_Plugin –  Martin M Jun 6 '09 at 19:01
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.