I've written a simple SMTP client for testing MTA configurations,
especially TLS and AUTH stuff. Its only external dependency is OpenSSL.
It's a bit rough-and-ready at the moment. Things it doesn't do (but
probably should) include HELO argument forging and pump-and-dump
testing. Patches welcome.
http://www.cus.cam.ac.uk/~fanf2/hermes/src/smtpc/
Tony.
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