Settings for Swirly MMS, T-Mobile, Netherlands.
MMSC: http://t-mobilemms
Proxy: 10.10.10.11:8080
APN : mms
Username: tmobilemms
Password: tmobilemms
Image size: 'whatever u want'
UserAgent: None
(Don't be tempted to add .nl at the end of the MMSC address. I know it seems like it should be there but believe me the address is correct as it is.
Also the UserAgent is important - it should be set to 'None' and not to 'iPhone' as in the default settings. It may work with any of the other phone brands in the menu but I've not tested it)
Happy messaging.
Lance