Hello,
is it possible to modify the whitelist-blacklist contrib to allow wildcard HELO/EHLO whitelisting, or some other way of doing it?
The domain I want to whitelist at HELO stage has several sending mailservers with different names, eg. mx1.domain.com, mx2.domain.com and I don't know all the names or IP-addresses. I guess I could find out those but I think wildcard EHLO could be more flexible?