How-to verify valid internal email addresses --- up front

Jason Ede J.Ede at
Wed Nov 7 09:13:40 GMT 2007

You might want to look at

I use the reject_unverified_recipient and its made a huge difference.


From: mailscanner-bounces at [mailscanner-bounces at] On Behalf Of W S [whatisee1 at]
Sent: 07 November 2007 04:13
To: mailscanner at; whatisee1 at
Subject: How-to verify valid internal email addresses --- up front

I have this Hub, up in front, which process all incoming emails (running Postfix and MailScanner). This Hub is bluntly accepting ALL emails from outside and runs every single email thru MailScanner (ClamAV, Spamassassin, RBL, DNSBL etc) and relaying all JUNK to another internal email server.
Now, is there any way to build some sort of MAP or database file (btree, hash…) from valid internal email addresses and set it on the Hub in order to reduce the queue?

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