298895 - Whenever I am connected to a VPN with TAP adapter up thunderbird wont send e-mails (no connection to SMTP)

Status: RESOLVED INVALID

(Thunderbird :: General, defect)

Description

[Fernando Costa]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4

My thunderbird works just fine, reading and sending e-mails using 5 different
pops/smtps. Whenever I connect to an openvpn VPN (and TAP adapters comes up), it
wont send any more e-mails. A few considerations:

- it still can read and connect to any pop3 server;
- imap works just fine as well;
- all other connections (web surfing, icq, msn, etc) work just fine;
- I checked windows route table, my VPN only adds a fake IP (192.168.blah) with
no default route or any other route to my SMTP ip; this means, it shouldent be
trying to use the VPN interface;
- sniffing the connection I can see the problem, I dont know why but thunderbird
tries to use the TAP interface to access the smtp server; this doesent happen
with the pop,imap, etc (which, by the way, are running in the same ip);

The VPN is to access my house remote desktop, I´m not using it as gateway or
anything that could make thunderbird smtp connection stop working.

Reproducible: Always

Steps to Reproduce:
1. Connect with OpenVPN to remote server using SSL
2. Open thunderbird
3. Write a message using any of my accounts
4. Click on send, and it keeps trying to connect with no success

Actual Results:  
It keeps trying to connect with no success, because its trying to use the wrong
interface (which isen´t windows default). This only happens for SMTP connection,
pop and imap work just fine.

Expected Results:  
Use windows default interface and send the e-mails :-)