Question : your server did not have a PTR record

When I send an email (not all emails) I receive the following return message:

This message was created automatically by the SMTP relay on firewall.soel.gr.

A message that you sent could not be delivered to all of its recipients.
The following address(es) failed:

[email protected]r
SMTP error from remote mail server after MAIL FROM:> SIZE=61873:
host mail.bankofgreece.gr [195.64.172.67]: 421 mail.bankofgreece.gr has refused your connection because your server did not have a PTR record.:
retry timeout exceeded

For your help II attach you in code section the results of dig command.

any idea?

gla

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             ------------------ dig soel.gr ------------------------------------
 
; <<>> DiG 9.4.2 <<>> soel.gr
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13696
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 5
 
;; QUESTION SECTION:
;soel.gr.                       IN      A
 
;; ANSWER SECTION:
soel.gr.                20      IN      A       62.38.63.19
 
;; AUTHORITY SECTION:
soel.gr.                73646   IN      NS      ns5.mydyndns.org.
soel.gr.                73646   IN      NS      ns1.mydyndns.org.
soel.gr.                73646   IN      NS      ns4.mydyndns.org.
soel.gr.                73646   IN      NS      ns2.mydyndns.org.
soel.gr.                73646   IN      NS      ns3.mydyndns.org.
 
;; ADDITIONAL SECTION:
ns1.mydyndns.org.       31      IN      A       204.13.248.76
ns2.mydyndns.org.       73464   IN      A       204.13.249.76
ns3.mydyndns.org.       73464   IN      A       208.78.69.76
ns4.mydyndns.org.       73464   IN      A       91.198.22.76
ns5.mydyndns.org.       73464   IN      A       203.62.195.76
 
;; Query time: 119 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Mon Sep 28 15:34:25 2009
;; MSG SIZE  rcvd: 223
 
---------------------------- dig mx soel.gr --------------------------------------------------------
 
; <<>> DiG 9.4.2 <<>> mx soel.gr
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23843
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 5
 
;; QUESTION SECTION:
;soel.gr.                       IN      MX
 
;; ANSWER SECTION:
soel.gr.                32814   IN      MX      5 mail.soel.gr.
 
;; AUTHORITY SECTION:
soel.gr.                73604   IN      NS      ns3.mydyndns.org.
soel.gr.                73604   IN      NS      ns4.mydyndns.org.
soel.gr.                73604   IN      NS      ns2.mydyndns.org.
soel.gr.                73604   IN      NS      ns5.mydyndns.org.
soel.gr.                73604   IN      NS      ns1.mydyndns.org.
 
;; ADDITIONAL SECTION:
mail.soel.gr.           20558   IN      A       62.38.63.18
ns2.mydyndns.org.       73422   IN      A       204.13.249.76
ns3.mydyndns.org.       73422   IN      A       208.78.69.76
ns4.mydyndns.org.       73422   IN      A       91.198.22.76
ns5.mydyndns.org.       73422   IN      A       203.62.195.76
 
;; Query time: 2 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Mon Sep 28 15:35:07 2009
;; MSG SIZE  rcvd: 228
 
-------------------------------------- dig -x 62.38.63.18 ------------------------
 
; <<>> DiG 9.4.2 <<>> -x 62.38.63.18
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 10670
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
 
;; QUESTION SECTION:
;18.63.38.62.in-addr.arpa.      IN      PTR
 
;; AUTHORITY SECTION:
63.38.62.in-addr.arpa.  2       IN      SOA     ns0.hol.gr. hostmaster.hol.gr. 2009032701 28800 7200 604800 86400
 
;; Query time: 10 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Mon Sep 28 15:36:00 2009
;; MSG SIZE  rcvd: 99

           
         

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Answer : your server did not have a PTR record

If they won't fix it (or are too stupid to figure out how), you could always setup your server to send to your ISP's SMTP server so that it will deliver your mail. This is called setting up a smart host.