You can ignore it. I am 99.999% sure it is a virus.
If your e-mail account has been suspended, then why does it still work! It is spam...
You can set the level of spam that spamassassin blocks in the control panel. If you set it too strict, lots of real mail can be blocked. Too leniant, and it will allow some spam through.
I'm not sure what you mean by the delayed e-mails, but some spam e-mails have forged dates and times in them, like, January 2000, etc. Spammers are stupid