Use the cryptographic RNG instead of Random() for generating boundaries
Use the cryptographic RNG instead of Random() for generating boundaries

Using Random() could potentially produce identical boundary strings
due to its use of the system clock as the seed value and that causes
mail clients like Thunderbird to break (they can't handle nested
multiparts that use identical boundary strings).

nachocove/MimeKit,jstedfast/MimeKit,nachocove/MimeKit,nachocove/MimeKit,jstedfast/MimeKit,jstedfast/MimeKit