Hi.
I wanted to file a bug report using Trac, but can't login - dont quite understand why. Anyhow, on latest version:
When a mail has a
<base href="http://www.example.com">
...
<img src="cid:part10.9e755a1794d1cdca724a1e916b331718_MID5397_t1315386" />
The image URL will be rewritten to:
http://www.example.com/cid:part10.9e755a1794d1cdca724a1e916b331718_MID5397_t1315386