Am 20.02.2014 14:46, schrieb Luigi Rosa:
> Feb 20 12:27:28 services postfix/smtpd[3054]: connect from
> unknown[205.201.129.15]
> Feb 20 12:27:29 services postfix/smtpd[3054]: NOQUEUE: reject: RCPT from
> unknown[205.201.129.15]: 450 4.1.8
> <bounce-mc.us6_14029727.478081-vendite=xxxxxx...@mail15.wdc01.mcdlv.net>:
> Sender address rejected: Domain not found;
> from=<bounce-mc.us6_14029727.478081-vendite=xxxxxx...@mail15.wdc01.mcdlv.net>
> to=<vend...@xxxxxx.it> proto=ESMTP helo=<mail15.wdc01.mcdlv.net>
>
> ON THE SAME SERVER if I type
> $ host mail15.wdc01.mcdlv.net
>
> I get
>
> mail15.wdc01.mcdlv.net has address 205.201.129.15
> mail15.wdc01.mcdlv.net mail is handled by 10 mail.mail15.wdc01.mcdlv.net.
>
> So why Postfix says "Domain not found"?
* maybe your smtpd is runnign chroot (Debian?)
* maybe there was a temporary error in name resloving
in case 1: fix that
in case 2: where is your problem?
450 is a *temporary reject*
as the docs say " The response is always 450 in case of a temporary DNS error"
reject_unknown_sender_domain
Reject the request when Postfix is not final destination for the sender
address, and the MAIL FROM domain has 1)
no DNS MX and no DNS address record, or 2) a malformed MX record such as a
record with a zero-length MX hostname
(Postfix version 2.3 and later).
The unknown_address_reject_code parameter specifies the numerical response
code for rejected requests (default:
450). The response is always 450 in case of a temporary DNS error.
