On 04/09/12 18:45, Always Learning wrote:
> We want to block all emails sent from spamming servers like
> Microsoft ESMTP Mail Service.
>
> In ACL HELO how can one match the data in the HELO/EHLO line ? I
> want to match 'Microsoft ESMTP MAIL Service' and then drop or
> reject the connection.
>
> 220 galsrv1.galvatech.local Microsoft ESMTP MAIL Service, Version:
> 6.0.3790.4675 ready at Wed, 5 Sep 2012 03:29:41 +1000
You're confusing the welcome banner with the helo. When a mailserver
connects to yours and issues a HELO/EHLO it only sends its hostname.
It doesn't send a string like "Microsoft ESMTP MAIL Service". You need
to match on a header in the data acl instead.
- --
Mike Cardwell https://grepular.com/ http://cardwellit.com/
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