Here you can find some useful links:
Email Header Analyzer:
Can be used to analyze a email header (e.g. shows the delays between server). Keep noted that this tool is running on a 3rd party server to perform the analysis.
AD Self Service Password Reset
Specops uReset revolutionizes self-service password reset by enabling authentication choice. With support of over 20 identity services that can be weighted and layered to increase identity security and end-users understanding of it, uReset guarantees that your end-users will always be able to complete the reset/account unlock task in the most secure and intuitive manner. The solution also supports pre-enrollment options to ensure immediate adoption and the ease of mind that your users can and will access the system effectively – anytime, anywhere from any internet connected device.
XCA - X Certificate and key management
X Certificate and Key management is an interface for managing asymetric keys like RSA or DSA. It is intended as a small CA for creation and signing certificates. It uses the OpenSSL library for the cryptographic operations.