I have MailEnable Enterprise Ed. 6.84 License
I am being hammered by various IPs trying various login combinations. Most fail.
06/05/18 00:11:37 SMTP-IN 343AB66C9886472B828D63CA9C08D8F1.MAI 1536 145.249.104.70 EHLO EHLO USER 250-.....g.com [145.249.104.70], this server offers 5 extensions 150 11
06/05/18 00:11:37 SMTP-IN 343AB66C9886472B828D63CA9C08D8F1.MAI 1536 145.249.104.70 AUTH bWljaGFlbGxhcmF5YWNyZWFjaW9u 504 Invalid Username or Password 34 30 michael@*****ds.com
EHLO USER seems to be there for almost all these hits.
Can I somehow block these using this EHLO/HELO?
I have tried the registry solution but not sure it works for my version.
Thanks in advance.