centos plesk problem email

Discussion in 'Installation/Configuration' started by sdesprez, Sep 2, 2018.

  1. sdesprez

    sdesprez New Member

    Hello
    I have the problem
    Malformed greeting or no A records found matching banner text for following servers, and banner is not an address literal. RFC5321 requires one or the other (should not be a CNAME). If this is not set correctly, some mail platforms will reject or delay mail from you, and can cause hard to diagnose issues with deliverability. Mailserver details:

    XX.XX.XX.XX | WARNING: The hostname in the SMTP greeting does not match the reverse DNS (PTR) record for your mail server. This probably won't cause any harm, but may be a technical violation of RFC5321

    Thank you for your help
    Sylvain,
     
  2. Taleman

    Taleman Well-Known Member HowtoForge Supporter

  3. sdesprez

    sdesprez New Member

    I have one IP for server and one IP by domain.
    The PTR IP give the domain
    But the mail send by ip server --> PTR of the server is different the domain name.
    If i change send by IP server I risk spam
    Help me
    Thank you very much
    Sylvain,
     
  4. Taleman

    Taleman Well-Known Member HowtoForge Supporter

    It should be FQDN of mail server host.
    I do not understand.
    Try mxtoolbox.com with your domain.
     
  5. sdesprez

    sdesprez New Member

    My message in centos
    25775C01A2A 201386 Sat Sep 1 08:48:38 [email protected]
    (delivery temporarily suspended: host xxxxxx refused to talk to me: 554 5.7.1 You are not allowed to connect.)
    my domain is francois-alain.com

    with dnsstuff
    Malformed greeting or no A records found matching banner text for following servers, and banner is not an address literal. RFC5321 requires one or the other (should not be a CNAME). If this is not set correctly, some mail platforms will reject or delay mail from you, and can cause hard to diagnose issues with deliverability. Mailserver details:

    5.39.52.175 | WARNING: The hostname in the SMTP greeting does not match the reverse DNS (PTR) record for your mail server. This probably won't cause any harm, but may be a technical violation of RFC5321
     
  6. Taleman

    Taleman Well-Known Member HowtoForge Supporter

    You should repair the errors these tool tell yuo about. And fix that reverse dns:
    Code:
    host mail.francois-alain.com
    use the IP-number that command shows for your mail host in next commad:
    Code:
    host 123.123.123.123
    It should return mail.francois-alain.com.
    Did you read the DNS tutorial?
     
  7. First set proper fqdn host name of the Server and set its rdns.
     
  8. sam117

    sam117 New Member

    You sure that you have ptr??
    dig @8.8.8.8 -x IP.AD.r.es
    ptr can set only owner AS of ip address aka provider
     
    Last edited: Sep 6, 2018

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