[Mimedefang] bounce check with sendmail and md_check_against

[Wayne]

Communigate Pro. It does reject about 99% of them. It's the clever spammers 
that are getting buy me causing me to bounce the messages.

Thanks
Wayne
----- Original Message ----- 
From: "David F. Skoll" <dfs at roaringpenguin.com>
To: <mimedefang at lists.roaringpenguin.com>
Sent: Thursday, November 30, 2006 1:10 PM
Subject: Re: [Mimedefang] bounce check with sendmail and md_check_against


> Wayne wrote:
>
>> I know everyone has probably figured this out but me. I am using
>> md_check_against_smtp_server on my mimedefang server to check usernames
>> before sending the mail to my server.
>
> What's your internal server running?  Some versions of MS Exchange and 
> qmail
> don't reject invalid recipients at RCPT time, so 
> md_check_against_smtp_server
> is useless.  With other versions of Exchange, you need to explicitly
> enable RCPT-time checks; google for "Exchange Recipient Filter"
>
> Regards,
>
> David.
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