On Wed, Mar 04, 2009 at 12:29:29AM -0200, Miguel Da Silva - Centro de
Matem?tica wrote:
> Mar 2 18:42:02 smtp postfix/smtpd[15652]: NOQUEUE: reject: RCPT from
> r190-134-zz-xx.dialup.adsl.anteldata.net.uy[190.134.zz.
> xx]: 450 4.7.1 <dest...@cmat.edu.uy>: Recipient address rejected:
> Greylisting in action, please come back later.; from=<usuar...@c
> mat.edu.uy> to=<dest...@cmat.edu.uy> proto=ESMTP helo=<UserPC>
>
> smtpd_recipient_restrictions =
> reject_rbl_client sbl.spamhaus.org
> reject_rbl_client bl.spamcop.net
> check_recipient_access hash:/etc/postfix/bloqueados
> permit_sasl_authenticated
> permit_mynetworks
> reject_unauth_destination
> reject_unknown_recipient_domain
> reject_unverified_recipient
> check_policy_service inet:127.0.0.1:10026
>
> Sugestions?! My idea is, if you are not part to $mynetworks, then
> authenticating is the only way to get mail relaid trough this server.
The user was not "relaying" mail was sent to a domain you are responsible
for, so this was not blocked by "reject_unauth_destination". Nor should it
have been. On a port 25 MX host you can't distinguish roaming users submitting
mail to your domains from outside MTAs delivering mail to your domains.
--
Viktor.
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