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| | |-+  Is there a way to clear the Recipient address verification cache?
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Author Topic: Is there a way to clear the Recipient address verification cache?  (Read 3973 times)
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« on: Monday 23 February 2015, 03:18:01 am »

I am running Endian Community 3.0
I use it as an inbound SMTP SPAM filter between the world and my mail server
For the SMTP Proxy settings I have the box (under Mail Server Settings) for "Recipient address verification" checked
This has had no problems for me until today. An outside service emailed a mailbox that did not yet exist on my mail server. Endian did what it was supposed to do and rejected the message after checking with my mail server that there was no such mailbox.
My problem is that I now created this mailbox, but Endian keeps rejecting messages to that address. If I uncheck the "Recipient address verification" box the messages come through, so I know it is this feature. As I understand there is a cache that postfix keeps on this, but I cannot find a way to flush the cache of verified (good or bad) recipient addresses.

Google seems to turn up very little other than confirming that there is a cache of some sort.  Below is the log entry I see when this option is enabled. I can do an SMTP query directly to my mail server and the recipeint is OK, and as I stated earlier it works if I disable this verification option. 

postfix/smtpd[11248]: NOQUEUE: reject: RCPT from mail-wg0-f48.google.com[]: 450 4.1.1 <postmaster@hiddendomain.net>: Recipient address rejected: unverified address: host[] said: 550 5.1.1 User unknown (in reply to RCPT TO command); from=<hiddenuser@gmail.com> to=<postmaster@hiddendomain.net> proto=ESMTP helo=<mail-wg0-f48.google.com>
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