Email trouble

Here’s a copy of the email I just sent support- anyone else having the same problems?

Is there a problem with email right now? I am part of several organizations
that often send out weekly or monthly mailings, and they tend to use large
CC: and BCC: lists (instead of mailing list software) to reach us all. Lately, I
haven’t received any of their email.

In addition, today I sent out an email to some of the people I volunteer with,
using a BCC: consisting of about 15 email addresses, mine included. I still
haven’t received my copy of that email. It should have arrived immediately.

What’s going on? I remember receiving an email letting us know you
implemented some sort of virus protection, but it seems to really be
affecting the email I receive. This email is very important and I can’t opt-off
the lists.