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PTR Record

    Question

  • Hello,

    i did test for smtp i found the below warning :

    Is it necessary to create a PTR record, if so where you should  create it

    in DNS  the public or at the ISP

    Please advise

    thanks in advance

    Sunday, December 20, 2015 12:45 PM

Answers

  • Hi,

    See here for information on how to set up reverse DNS: http://markgossa.blogspot.com/2015/09/exchange-2007-2013-reverse-dns.html.

    Your need to contact your ISP to set up the PTR record. As per your screenshot, you will need an PTR record that resolves your public IP to mail.domain.com and you'll also need an A record that resolves mail.domain.com to the same public IP. 

    Thanks.


    Please mark as an answer if this answers your question

    Mark Gossa

    MCSE 2003, MCITP Enterprise Administrator 2008 R2, MCSA 2012 R2, MCTS Exchange 2010, MCTS SQL 2012, MCTS SharePoint 2007, VCP4, VCP5, CCNA

    Blog: http://markgossa.blogspot.com   LinkedIn:

    Posts are provided “AS IS” without warranty of any kind, either expressed or implied.

    Monday, December 21, 2015 12:12 AM

All replies

  • Hello

    Contact your ISP support


    sorry my english

    Sunday, December 20, 2015 7:45 PM
  • PTR record is one of the methods many mail servers use as an antispam mechanism. The PTR record should be the same name that your mail server uses when sending. It is the match of these that is used for antispam.

    As Sneff_Gabor mentions, your ISP is responsible for reverse DNS records. Send them a request indicating your IP address and the name you want in the PTR record.


    Byron Wright (http://fieldnotes.conexion.ca)

    Sunday, December 20, 2015 8:04 PM
  • Hi,

    See here for information on how to set up reverse DNS: http://markgossa.blogspot.com/2015/09/exchange-2007-2013-reverse-dns.html.

    Your need to contact your ISP to set up the PTR record. As per your screenshot, you will need an PTR record that resolves your public IP to mail.domain.com and you'll also need an A record that resolves mail.domain.com to the same public IP. 

    Thanks.


    Please mark as an answer if this answers your question

    Mark Gossa

    MCSE 2003, MCITP Enterprise Administrator 2008 R2, MCSA 2012 R2, MCTS Exchange 2010, MCTS SQL 2012, MCTS SharePoint 2007, VCP4, VCP5, CCNA

    Blog: http://markgossa.blogspot.com   LinkedIn:

    Posts are provided “AS IS” without warranty of any kind, either expressed or implied.

    Monday, December 21, 2015 12:12 AM