Question

Thunderbird Can't Connect Through Proxy

Asked by: shacho

I am trying to connect to an IMAP server by way of a chain of proxy servers.  The first proxy resides on localhost and is configured correctly as far as I can tell.  It says in the status window that it is "ready to accept incoming connections".  The connection that's meant to take place is, Thunderbird sends requests to the local proxy who passes them through an HTTP tunnel that terminates on another proxy server located elsewhere on the public Internet.  That sounds a bit complicated, but I'm really stuck at step 1.  I can't even seem to get Thunderbird to talk to the localhost proxy.  It works just fine for Firefox, and I have the proxy configuration set up exactly the same for Thunderbird.  When I make HTTP requests with Firefox, they show up in the localhost proxy log.  NOTHING shows up when I click connect in Thunderbird.  It immediately says "Failed to connect to server... ".  Any idea what might be wrong?

shacho

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Asked On
2009-10-13 at 02:59:41ID24807149
Topics

Thunderbird Email Client

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Email Clients

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Web Servers

Participating Experts
2
Points
500
Comments
9

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Answers

 

by: olegazPosted on 2009-10-13 at 03:32:12ID: 25558450

Does IMAP port (143) allowed on proxy?

 

by: shachoPosted on 2009-10-13 at 03:33:59ID: 25558461

A good question - but I'm not sure how to check.

 

by: TolomirPosted on 2009-10-13 at 04:28:34ID: 25558799

you can check with tcpview from microsoft. Lookout for SYN Sent messages
http://technet.microsoft.com/en-us/sysinternals/bb897437.aspx

 

by: shachoPosted on 2009-10-13 at 04:31:34ID: 25558819

Looks a bit like the output form netstat (which might be another way to check).  I'll check it out tomorrow morning.

MB

 

by: TolomirPosted on 2009-10-13 at 04:39:31ID: 25558874

tcpview is netstat with permanent updates.

This makes it interesting (freeware anyway)

 

by: shachoPosted on 2009-10-13 at 04:41:15ID: 25558882

Roger that.  Will check first thing tomorrow.  What should I be looking for, though?  

 

by: TolomirPosted on 2009-10-13 at 04:50:16ID: 25558948

How thunderbird behaves (where it wants to connect to)


 

by: shachoPosted on 2009-10-13 at 04:55:31ID: 25558976

Makes sense.  I should be back in the office in about 12 hours.  I'll check it then.

MB

 

by: shachoPosted on 2009-11-26 at 17:34:36ID: 25918432

I've decided to abandon this project so I don't need to follow it through to a solution.  Thanks much for your comments.

Cheers,

Mike

20120131-EE-VQP-002

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