SPF predvideva preverjanje domene v From: v headerju e-maila in/ali v "MAIL From:" v SMTP protokolu. V "EHLO" je pa prav normalno, da piše neka druga domena, saj tisti SMTP strežnik, ki pošilja e-mail ponavadi ni v isti domeni kot pošiljatelj e-maila (je pa ta strežnik v drugi domeni seveda naveden v SPF).
Tole so headerji in sporočilo o napaki (IP-je in domeno sem zamenjal. če kdo od T-2 rabi pravo domeno, naj mi pošlje ZS):
Koda: Izberi vse
smtp-good-in-1.t-2.net #550 5.7.1 <info@t-2.net>: Recipient address rejected: Please see http://www.openspf.org/Why?s=helo;id=www2.domena.com;ip=85.200.2.8;r=smtp-good-in-1.mail.t-2.local ##
Prvotne glave sporočila:
Received: from www2.domena.com ([192.168.*.*]) by
www2.domena.com ([192.168.*.*]) with mapi; Wed, 25 Aug 2010 13:25:17
+0200
From: "Peter" <peter@domena.com>
To: "info@t-2.net" <info@t-2.net>
Disposition-Notification-To: "Peter"
<peter@domena.com>
Date: Wed, 25 Aug 2010 13:25:16 +0200
Subject: Vprasanje
Thread-Topic: Vprasanje
Thread-Index: ActESDEA6NnjzUmfSaOlk5jdGwL9kA==
Message-ID: <37D1CC12B423904984CC350AA4D8353A012595E49A17@www2.domena.com>
Accept-Language: sl-SI
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
acceptlanguage: sl-SI
Content-Type: multipart/alternative;
boundary="_000_37D1CC12B423904984CC350AA4D8353A012595E49A17www2domenac_"
MIME-Version: 1.0
EHLO www2.domena.com
MAIL From: <peter@domena.com>
RCPT To: <info@t-2.net>
DATA
From: peter@domena.com
V razlagi piše, da je e-mail zavrnjen, ker pride od domene www2.domena.com:
Koda: Izberi vse
smtp-good-in-1.mail.t-2.local rejected a message from a mail server claiming to be www2.domena.com.
smtp-good-in-1.mail.t-2.local received a message from www2.domena.com (85.200.2.8) from a mail server claiming to be www2.domena.com.
However, the domain www2.domena.com has declared using SPF that it does not send mail through www2.domena.com (85.200.2.8). That is why the message was rejected.