Spam-blocking sub-domains

A long time ago, around the time I started compiling my “Best Practices…” list, I began creating forwarders for ecommerce accounts to distinguish who was sending me solicitations and to be able to stop them easily. If you give someone your email address, say “joe@joe-co.com” then you have no idea where the soliciations are coming from and the only way to stop them is to increase your SpamAssassin rating—potentially losing false positives—or to get a new email address.

But, if you create “hsbc@joe-co.com,” and forward that to “joe@joe-co.com,” you can see who sold your email address and promptly disrupt the flow of spam by simply deleting the forwarder. Well, after a decade of online business through my company, ERA404, I have a veritable bee’s hive of forwarders floating around. And, as I’d like to do some house-keeping to keep them organized, I’ve decided to create a sub-domain to create easily visual recognition of what is an actual forwarder (i.e., don@ forwards to don.citarella@) and what is a spam-blocking forwarder (i.e., hsbc@ temporarily forwards to don.citarella@).

Here’s where I need your assistance. Fill in the blank:
Solicitor: “Sir, in order for me to process your order, you need to provide a valid email address.”
Me: So I’d like to provide them with: “[solicitor name]@_____.era404.com” where ______ is the word I’m seeking.

Here are a few that I thought of: @firewall, @temporary, @spam, @commerce, @solicitations, @junkmail, @junk, @delete, @block, @protect, @safe, @safety, @protection, @temp.

Here are a few suggestions by friends: @refuse, @trash, @scrap, @waste, and my personal favorite, @is-a-dirty-dirty-whore. (Imagine providing the following: “The email address is: hsbc@is-a-dirty-dirty-whore.joe-co.com“). Ah, it’s the little things in life. It truly is.

So I appeal to you, gentle readers. What would be the best spam-blocking sub-domain? While my preference is to go with @solicitations, I worry it will be too long: networksolutions@solicitations.joe-co.com. And does @trash have that certain je ne sais quoi that I want, so that solicitors think “I see what you did there. Well played, dear sir. Well played.“?