Reverse lookup is necessary for IPv6 address assigned to SMTP Server otherwise the emails sent out will be treated as spam by other SMTP servers. To this end, I have asked my serving ISP to dedicate the reverse lookup of the prefix 2401:300:0:1::/64 to me. The configuration at my side is tested ok and perfect.
[localhost ~]# dig -x 2401:300:0:1::8080
; <<>> DiG 9.5.2-RedHat-9.5.2-1.fc10 <<>> -x 2401:300:0:1::8080
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- 36584="36584" font="font" id:="id:" noerror="noerror" opcode:="opcode:" query="query" status:="status:">
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 4
;; QUESTION SECTION:
;0.8.0.8.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.0.0.0.0.0.0.3.0.1.0.4.2.ip6.arpa. IN PTR
;; ANSWER SECTION:
0.8.0.8.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.0.0.0.0.0.0.3.0.1.0.4.2.ip6.arpa. 86400IN PTR v6-mail.com.
;; AUTHORITY SECTION:
1.0.0.0.0.0.0.0.0.0.3.0.1.0.4.2.ip6.arpa. 86400 IN NS ns2.i3way.net.
1.0.0.0.0.0.0.0.0.0.3.0.1.0.4.2.ip6.arpa. 86400 IN NS ns1.i3way.net.
;; ADDITIONAL SECTION:
ns1.i3way.net. 3600 IN A 202.81.252.116
ns1.i3way.net. 3600 IN AAAA 2401:300:0:1::8080
ns2.i3way.net. 3600 IN A 202.81.252.117
ns2.i3way.net. 3600 IN AAAA 2001:470:18:16c::2
;; Query time: 1 msec
;; SERVER: 202.81.252.116#53(202.81.252.116)
;; WHEN: Mon Jan 14 09:07:46 2013
;; MSG SIZE rcvd: 248
No comments:
Post a Comment