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Thread: Are my DNS records correct?

  1. #1
    jim.thornton is offline Loyal Member
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    Default Are my DNS records correct?

    I'm hoping someone can give me some advice here.

    I have have a VPS server (let's say 1.2.3.4 is the ip address) that is running a DirectAdmin control panel. The DNS is handled automatically with the control panel and the mail system is Exim/Dovecot.

    I've setup ZCS on an internal server and I've got everything working (let's say the IP is 7.8.9.0). Just the other day I had the reverse DNS fixed and now I think all the settings are correct.

    DNS Setup (prior to ZCS) on 1.2.3.4:
    Code:
    mail A 1.2.3.4
    domain.com. A 1.2.3.4
    domain.com. NS 1.2.3.4
    domain.com. NS x.x.x.x
    mail MX 10
    domain.com. TXT "v=spf1 a mx ip4:1.2.3.4 ~all"
    DNS Setup (after setting up ZCS) on 7.8.9.0:
    Code:
    mail A 7.8.9.0
    domain.com. A 1.2.3.4  (unchanged)
    domain.com NS 1.2.3.4 (unchanged)
    domain.com NS x.x.x.x (unchanged)
    mail MX 10 (unchanged)
    domain.com. TXT "v=spf1 a mx ip4:1.2.3.4 ~all"
    QUESTIONS:
    1) Does this setup look correct? Server1 is still running the webserver and Server2 is ONLY for ZCS.

    2) TXT Record: Do I need to change the IP address within this record to point to 7.8.9.0? I'm not really sure what this record is for so I'm not sure what to do.

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    Default

    You can verify the DNS settings by running all the commands (on the Zimbra server) in the 'Verify ....' section of the Split DNS article, the output from all those commands will confirm if they point to the correct server etc. The IP address in an SPF record identifies the server that sends mail, you can verify the record by using one of the on-line tools.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    jim.thornton is offline Loyal Member
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    Is it a security risk to post the actual IP addresses and records? If not I will post my exact setup to get some response.

    I'm confused with the SPF/TXT records and would appreciate further assistance.

  4. #4
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by jim.thornton View Post
    Is it a security risk to post the actual IP addresses and records? If not I will post my exact setup to get some response.
    Not as far as I'm concerned but that is your decision.

    Quote Originally Posted by jim.thornton View Post
    I'm confused with the SPF/TXT records and would appreciate further assistance.
    What is it that's confusing you? Do you have a public SPF record configured? Have you tested the records with one (or more) of the online tools?
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
    jim.thornton is offline Loyal Member
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    What's confusing me is the SPF record. All I have is a TXT record (as stated above).

    I have used the tools but right now it doesn't really matter anyway because I have not yet pointed my DNS records to use ZCS. I'm still currently using the original (Dovecot/Exim).

    Last year I briefly had ZCS setup but I was running into problems with mails not coming in and such, so I turned it off again. Now I want to get it going again but make sure that everything is setup correctly this time. Last time someone else set it up for me.

    I really just need to know if I'm suppose to change the IP address in the TXT record which seems to have spf in it?

    Also should I be adding an SPF record on it's own? The records are currently setup as stated above. The only other records that I have in there are for ftp. and www.

  6. #6
    jim.thornton is offline Loyal Member
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    I can post the information for you. Do you want me just to go into my control panel and take screenshots? How do you want me to gather the info for you?

  7. #7
    jim.thornton is offline Loyal Member
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    Thanks for the help. Here are some screenshots that I took. This particular domain is the actual domain name that I set ZCS up on. Once I figure out if the settings are correct I intend on switching over my other domains/mail accounts.
    Attached Images Attached Images

  8. #8
    jim.thornton is offline Loyal Member
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    So I don't need to change the TXT record even though it has the wrong server IP in it?

    And, should I create an SPF record?

  9. #9
    jim.thornton is offline Loyal Member
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    Thank you. What would the value of the SPF record be?

  10. #10
    jim.thornton is offline Loyal Member
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    I didn't miss it, but as mentioned just a little confused.

    For example, if I have a TXT record with the following value:
    redcarpetfinancial. TXT "v=spf1 a mx ip4:206.248.167.232 ~all"

    Is that correct?

    Or, based on that article you linked to it was:
    redcarpetfinancial. TXT "v=spf1 a mx ip4:mail.redcarpetfinancial.ca ~all"

    Is that correct?

    Also, does that mean that there is an SPF record? Because there is an area to enter in a specific SPF record within my control panel as well as a TXT record.

    My question was referring to syntax. If there is a requirement for a separate SPF record (should I so choose), what is the syntax?

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