Hi, > Unless you changed the headers, it looks like it came from an IP with no > reverse DNS entry. > > This is easy enough to stop dead in it's tracks at your MTA. If there isn't > any reverse DNS, the chances of it being a legitimate mail server are pretty > slim.
Yes, but not enough to categorically block all incoming mail based on that, though. At least in my environment, all it would take is one customer to call and complain, and force me to have to do even more work to make them an exception and exclude them from this filter. Thanks, Alex
