Are there any tools for the address verification database? To see what
addresses are in the positive/negative sides or manage them?
When an attempt to verify an address times out because the sender mail
server didn't respond, its logged as:
450 4.1.7 Sender address rejected: unverified address: conversation with
example.com[IP] timed out while receiving the initial server greeting
The sending server tries re-delivery in 5 minutes, but another attempt
to verify is not tried because the previous time out is cached and the
retry is automatically bounced again. Right?
Verify(8) wont attempt to retry timeouts until the
address_verify_negative_refresh_time has lapsed? Correct? Anyway around
this so timeouts would be re-tried on each delivery attempt? Or would I
have to disable the negative database? Is there a difference between a
timeout vs a successful rcpt command that reports the address is invalid
in this regard?
- sender address verification postfix
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