Okay, will do it that way then.
Thank you!
Best regards,
Jozef.
On 16. 10. 2017 0:42, Wietse Venema wrote:
Jozef Matick?:
Hello Wietse,
Not sure I understand.
The problem I have is when I have address_verify_negative_cache = no.
Postfix is then deferring sender with 450 Address verification in
progress despite the fact Dovecot (LMTP) is replying to Postfix with 550
User doesn't exists (with smtpd_recipient_restrictions =
reject_unverified_recipient as I don't want to generate backscatter).
When a mailbox needs to be created on-demand, you don't want the
4xx response (verification in progress) before the mailbox is
created, but you want the 5xx response (mailbox does not exist)
which causes the message to be returned as undeliverable.
If you really want that, just set a short expire time for negative
verification results.
Wietse
