Friday, November 05, 2004

Coming back to setting MX records in DNS for mail server

A quick look at the MX records for one of the websites say redhat.com

redhat guys if you find the info here i cannot post pls dunn feel offended and mail me and i will remove it from here :)

C:\WINDOWS\system32>nslookup
Server: Mydns.server
Address: A.B.C.D

> set querytype=MX
> redhat.com
Server: Mydns.server
Address: A.B.C.D

Non-authoritative answer:
redhat.com MX preference = 10, mail exchanger = mx3.redhat.com
redhat.com MX preference = 20, mail exchanger = mx2.redhat.com
redhat.com MX preference = 10, mail exchanger = mx1.redhat.com

redhat.com nameserver = ns3.redhat.com
redhat.com nameserver = ns1.redhat.com
redhat.com nameserver = ns2.redhat.com
mx1.redhat.com internet address = 66.187.233.31
mx3.redhat.com internet address = 66.187.233.32
mx2.redhat.com internet address = 66.187.237.31
ns1.redhat.com internet address = 66.187.233.210
ns2.redhat.com internet address = 66.187.224.210
ns3.redhat.com internet address = 66.187.229.10


Redhat uses 3 MX records namely

mx1.redhat.com (Priority 10)
mx2.redhat.com (Priority 20)
mx3.redhat.com (Priority 10)

You can read their IP's in the DNS O/P above.

Any smtp deamon would first try and contact the mail server with a lower priority and then if it is not available a mail server with higher priority.

You can also do a DNS Round robin for other each MX record.

If there are MX records of equal priority then it is upto the smtp server to pick up on one of the records, there is no rule for this selection of atleast i know in the config files. :)

Next time on i will try and make a Dummy company ABC chemicals and then post a dummy snip from its .zone file for MX records.

Have a great weekend and remember dunn work the weekend.

Nitin :)

3 Comments:

At 10/25/2009 09:18:00 PM, Blogger Adi said...

Thank you for sharing.
Oes Tsetnoc | Mengembalikan Jati Diri Bangsa | Kenali dan Kunjungi Objek Wisata di Pandeglang | Oes tsetnoc | Online Marketing | Electronics Gadgets | etips solution | Travel Guide

 
At 10/29/2009 02:34:00 PM, Blogger The Jack said...

Thanks ever so much, very useful article. If you do not mind, please visit my article related to pandeglang district in Banten, Indonesia at Kenali dan Kunjungi Objek Wisata di Pandeglang or Kenali dan Kunjungi Objek Wisata di Pandeglang second and also Kenali dan Kunjungi Objek Wisata di Pandeglang Objek Wisata Air Terjun Curug Gendang and Kesenian Debus, Sejarah dan Ciri Khas Wisata Banten and our hard work at Kerja Keras Adalah Energi Kita that's right Kerja Keras Adalah Energi Kita, and Kenali dan Kunjungi Objek Wisata di Pandeglang Memasuki Babak Akhir also Objek Wisata Taman Wisata Alam Carita, Kenali dan Kunjungi Objek Wisata di Pandeglang, or Kenali dan Kunjungi Objek Wisata di Pandeglang, also Kenali dan Kunjungi Objek Wisata di Pandeglang, or Kenali dan Kunjungi Objek Wisata di Pandeglang, also Kenali dan Kunjungi Objek Wisata di Pandeglang, or Kenali dan Kunjungi Objek Wisata di Pandeglang, also Kenali dan Kunjungi Objek Wisata di Pandeglang, or Kenali dan Kunjungi Objek Wisata di Pandeglang, very smart thank you!

 
At 11/15/2009 09:35:00 AM, Blogger Daniela said...

Find your great Travel News and sing the songs at Free Song Lyric or you can watch the drama at Korea Drama Online one of great korea drama is A Love to Kill if you go to travel to Indonesia learn Learn Indonesia Language first! And find your home cari rumah or make a blog Belajar membuat Blog find your home again rumah dijual and again at jual rumah then if you want buy a new laptop see the Laptop Price List or you can buy a New Blackberry and then take care your Health & Jewerly.

 

Post a Comment

<< Home