Geert Hendrickx wrote:
On Wed, Dec 10, 2008 at 05:36:04PM +0100, Dennis // [EMAIL PROTECTED] wrote:
But how would recipient verification behave when the customers
mailserver is unavailable ?
Postfix then sends a temporary failure (4xx) back to the client.
* if the result for that address is not already cached.
Would one have to rely on the cache or would postfix hold the mail ?
The results are cached by the verify(8) daemon.
When the customer mail server is unavailable:
- if address is cached as valid, the mail is accepted and held
by postfix.
- if the address is cached as invalid, the mail is rejected
with $unverified_recipient_reject_code, default 450. Change
unverified_recipient_reject_code to 550 once you trust postfix.
- If the address is not cached, mail is rejected with
$unverified_recipient_defer_code, default 450. Leave this set
at 450 to defer mail for a later attempt.
The OP should read:
http://www.postfix.org/ADDRESS_VERIFICATION_README.html
--
Noel Jones
