Strange, most strange. Libcamel is certinly at 1.12.1, and wanting any version higher than that is an error.
It is unlikely to be a problem with a download from any country, although I will caution you that several of the .au cvsup servers are not up to date. All distfiles have their MD5 (and optionally SHA256) checksums verified.)
Anyway, try this: (if you don't have sudo, then su to root, and ignore it)
Code:
cd /usr/ports/evolution-exchange
script ~/evolution-exchange-build.txt
sudo make clean
sudo make
^D
(that last line means control-D)
If that fails, could you attach the script file generated (~/evolution-exchange-build.txt) so we can see exactly what failed?
If it works, then go right ahead with portupgrade/portmaster-ing it. Specify the -w option (or -C for portmaster), and they will not have to rebuild the port.