Sounds like a Gernsback character

[dormouse1953]

Just doing my regular look to see if anything has got stuck in my spamtrap and saw a (definitely spam) message.  I discovered a while back that my means of posting to Usenet for many years resulted in a message identifier being place in the header of each message which turned out to be viable e-mail addresses to me.  Each id starts with a mixture of numerals and letters which seem to depend on the time of day I made the posting.

Some harvester program seems to have collected these and some spambot assumes that the bit before the @ is my name.

So I just got a message starting "Dear 1412c".