"Reject with reason" reveals my main email address for spammers.
I have email (alias) address, say email@example.com. It have been under spam attacks for months. So, I decided to add rule "Reject with reason" with condition "contains firstname.lastname@example.org" and with the reason message being addressed to the appropriate human (not spambot) senders :
This email address (email@example.com) is on spamlists. If you are a human contact me at new email address new**e**mail at mydomain dot com. Remove all asterisks. Change at and dot.
Now, firstname.lastname@example.org is my new main email.
I've decided to do some tests and sent test "spam message" to email@example.com from external address. And I recieved "reject message" which looked like:
Your message to <firstname.lastname@example.org> was automatically rejected: This email address (email@example.com) is on spammers lists. If you are human contact me at new email address new**e**mail at mydomain dot com. Remove all asterisks. Change at and dot.
That is, my new email address was revealed in plain vanilla form!
How can I change this behaviour? If can't, could you please change response template or add new "Reject with reason" action without revealing main email address.