OK, here are some results:
Negative results only are showed below:
SpamAssassin thinks you can improve
The famous spam filter [SpamAssassin]. Score: -0.3.
A score below -5 is considered spam.
-0.1 [DKIM_SIGNED] Message has a DKIM or DK signature, not necessarily valid
This negative score will become positive if the signature is validated. See immediately below.
0.1 [DKIM_VALID]Message has at least one valid DKIM or DK signature
Great! Your signature is valid
0.1 [DKIM_VALID_AU] Message has a valid DKIM or DK signature from author’s domain
Great! Your signature is valid and it’s coming from your domain name
-0.001 [HTML_MESSAGE] HTML included in message
No worry, that’s expected if you send HTML emails
-0.001 [RCVD_IN_SORBS_DUL] SORBS: sent directly from dynamic IP address
nn.nnn.nn.nn listed in
-0.363 [RDNS_DYNAMIC] Delivered to internal network by host with dynamic-looking rDNS
0.001 [SPF_HELO_PASS] SPF: HELO matches SPF record
0.001 [SPF_PASS] SPF: sender matches SPF record
Great! Your SPF is valid
You’re not fully authenticated
We check if the server you are sending from is authenticated
[SPF] Your server nn.nnn.nn.nn is authorized to use email@example.com
Your DKIM signature is valid
Your message passed the DMARC test
Your reverse DNS does not match with your sending domain.
Reverse DNS lookup or reverse DNS resolution (rDNS) is the determination of a domain name that is associated with a given IP address.
Some companies such as AOL will reject any message sent from a server without rDNS, so you must ensure that you have one.
You cannot associate more than one domain name with a single IP address.
Your IP address nn.nnn.nn.nn is associated with the domain nn-nnn-nn-nn-cable.xxxx. net.
Nevertheless your message appears to be sent from ** XXXX.xx** .
You may want to publish a pointer (PTR type) DNS record with a value of ** XXXX.xx** or use nn-nnn-nn-nn-cable.xxxx. net as hostname in your mail software
Here are the tested values for this check:
- IP: nn.nnn.nn.nn
- HELO: XXXX.xx
- rDNS: nn-nnn-nn-nn-cable.xxxx. net
Your domain name XXXX.xx is assigned to a mail server.
Your hostname XXXX.xx is assigned to a server.
Can you give me some directions how to solve these things?
- The Spamassasin
- It’s the rDNS thing
- The List-Unsubscribe header