Hi Roberto, just something I was thinking about and thought I would toss out. Most organizations have a standard form for their email addresses IE: firstname.lastname@domain.com, firstinitiallastname@domain.com , or something similiar but with a limited size firstinitiallastnametoamaxof8characters@domain.com

When I watch our activity log I see tons of email coming from spammers with addresses that are non existant, generally they are not based on our corporate standard. This is often a technique used to harvest email addresses so I would think lots of companies see this traffic.

Would it be possible to add a filter to drop email addresses that do not conform to the corporate standard? It would be difficult to do if a company doesn't have a standard such as firstname.lastname@ or a set number of characters in the first part of the address, but I think most do.

This probably needs some more refining and thought.

Cheers,
Wayne

Hi Roberto, I was referring to the recipients email address, not the sender. I agree lots of auto responders and list mailers use unique email addressses that would not conform, but the recipients email should generally conform to the inhouse corporate standard.

We see tons of email from spammers that don't conform to our corp standard...being able to drop incoming mail based on recipient address not conforming would be nice. For example,

our corp standard is firstname.lastname@domainname.com ie: billy.bob@redneck.com

Spammers will send to bbob@redneck.com and bob@redneck.com and billybob@redneck.com and billyb@redneck.com , all of which should be immediately dropped. In most cases these are attempts to harvest legit email addresses.

If Billy Bob has signed up to a mailing list, or gets info from his bank he should have provided his conforming email address, thus delivery should work.

Cheers,

Wayne