Download DavMail

Give DavMail the following config

Set URL: https://mywebmail.warwick.ac.uk/exchange/
IMAP port: 1143
Local SMTP: 1025
Caldav HTTP:1080
Loal LDAP: 1389

Open Thunderbird and set up a new account
Account Type: IMAP
Server Name: localhost
User Name: your warwick log-in name ..without @warwick.ac.uk
Use secure connection: None
Port: 1143

Outgoing SMTP:
Server: localhost
User: warwick log-in name without @warwick.ac.uk
Port: 1025
Security: None
**Note for the Outgoing SMTP ...off campus , it needs to be configured w.r.t your ISP...on campus IT services have a SMTP setting to use.

works for outlook 2003 run DavMail first then Thunderbird