links about CMS and web programming:

http://www.devarticles.com/c/a/JavaScript/Building-a-CHAP-Login-System-Encrypting-Data-in-the-Client/2/
http://www.techrepublic.com/article/two-ways-to-design-a-database-for-a-net-based-cms/

other projects using CppCms:

https://github.com/allan-simon/tatoebacpp
11z-zpr-netspy

captcha generator (standalone, sweat, no Imagemagick or fonts needed):

http://brokestream.com/captcha.html
http://www.cthulhulives.org/toybox/PROPDOCS/PropFonts.html

SMTP:

https://www.cs.auckland.ac.nz/~pgut001/cryptlib/download.html
http://sourceforge.net/projects/libquickmail/