I’m seeing increasing amounts of a certain type of spam. The From is a valid email address from a friend or relative, and there are several addresses CC’d that I don’t know. The body is a single spammy-looking URL. I have no idea how spammers are able to do this, but it does get through SpamSieve’s filter, probably because the From address is someone I’ve written to before.
Should I train these types of emails as spam, or should I just delete them? I’m concerned that if I train them as spam, SpamSieve will blacklist the From address and then legit email from that person won’t get through.