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01.25.2008 at 02:57AM PST, ID: 23110623
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7.6

DNS Record Setup - MX Record, SPF record and PTR - For VPS Hosting multiple virtual domains

Asked by copeasetic in Email Servers, Linux

Tags: , , ,

My problem:
I have set up several domains on a VPS running WHM and cPanel on CentOS 4.6. I have been unable to properly set up my MX, SPF and PRT record as to properly send mail to domains that perform reverse DNS lookups. I have not properly set up my VPS and I need some guidance. My current DNS record as it pertains to mail looks like this:

Definitions:
shared IP = xxx.xxx.xxx.173 for virtual domains without SSL
exclusive IP = xxx.xxx.xxx.182 for main domain with SSL cert
exclusive IP = xxx.xxx.xxx.30  for mail server with SSL cert

domain.com.   A           xxx.xxx.xxx.182
domain.com.  mx    0    mail.domain.com.
mail.domain.com.    A   xxx.xxx.xxx.30
xxx.xxx.xxx.182      PTR   ggtai.com.
ns1.domain.com.   A xxx.xxx.xxx.182
ns2.domain.com.   A xxx.xxx.xxx.182
domain.com.       TXT   "v=spf1 a mx ~all"
hostname.domain.com     A     xxx.xxx.xxx.173


I have screwed this up when I installed the SSL certs, i.e. changed the IP of the mail server so I could install a SSL cert...

results of a dig -x on xxx.xxx.xxx.182

[root@ruby ~]# dig -x 66.11.239.182

; <<>> DiG 9.5.0b1 <<>> -x xxx.xxx.xxx.182
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28310
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;182.239.11.66.in-addr.arpa.    IN      PTR

;; ANSWER SECTION:
182.239.11.66.in-addr.arpa. 3600 IN     PTR     xxx-xxx-xxx-182.managemyvps.com.

;; AUTHORITY SECTION:
239.11.66.in-addr.arpa. 18930   IN      NS      ns1.managemyvps.com.
239.11.66.in-addr.arpa. 18930   IN      NS      ns2.managemyvps.com.

; <<>> DiG 9.5.0b1 <<>> -x xxx.xxx.xxx..30
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13787
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;30.239.11.66.in-addr.arpa.     IN      PTR

;; ANSWER SECTION:
30.239.11.66.in-addr.arpa. 3600 IN      PTR     xxx-xxx-xxx-30.managemyvps.com.

;; AUTHORITY SECTION:
239.11.66.in-addr.arpa. 16135   IN      NS      ns1.managemyvps.com.
239.11.66.in-addr.arpa. 16135   IN      NS      ns2.managemyvps.com.

;; Query time: 37 msec
;; SERVER: 67.100.88.27#53(67.100.88.27)
;; WHEN: Fri Jan 25 02:50:07 2008
;; MSG SIZE  rcvd: 121

;; Query time: 36 msec
;; SERVER: 67.100.88.27#53(67.100.88.27)
;; WHEN: Fri Jan 25 02:03:33 2008
;; MSG SIZE  rcvd: 123

I need explicit instructions on what I need to do to correct this.

Thanks in advance.
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Keywords: DNS Record Setup - MX Record, SP…
Title
1 SPF / DNS Records
2 DNS and SPF checks
3 PTR record for emailing
4 SPF & Domain Spoofing
5 SPF confusion
6 SPF RECORD
 
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[+][-]01.25.2008 at 03:46AM PST, ID: 20741650

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[+][-]01.30.2008 at 01:45PM PST, ID: 20781728

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[+][-]02.01.2008 at 01:57PM PST, ID: 20801147

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[+][-]02.01.2008 at 06:01PM PST, ID: 20802551

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[+][-]02.01.2008 at 06:58PM PST, ID: 20802777

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About this solution

Zones: Email Servers, Linux
Tags: WHM/cPanel, WHM, WHM 11.15.0 cPanel 11.17.4-C19834, CENTOS Enterprise 4.6 i686 on virtuozzo - WHM X v3.1.0
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Solution Provided By: Nopius
Participating Experts: 2
Solution Grade: A
 
 
 
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