Dictionary Acctack Protection

rajsalus
Posts: 1
Joined: Wed Jun 06, 2018 8:02 am

Dictionary Acctack Protection

Postby rajsalus » Wed Jun 06, 2018 8:08 am

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.

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