Since few weeks I have been experiencing unusual amounts of a typical kind of SPAMing technique.
What the spammers doing here is they send SPAM mails to any non existing email address on the net with the targets e-mail address. Due to this the email bounces back with the SPAM message to the target. Even having SPF record on the DNS does not help since there are many many e-mail servers who don't check SPF.
Have you been experiencing similar problem ?
Shreyas Zare