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2 Hosts - 1 Domain

Discussion in 'Bind/DNS/Nameserver' started by Juan Jesus Santos Garcia, Mar 3, 2017.

  1. Juan Jesus Santos Garcia

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    Hola a todos, tengo una consulta.

    Actualmente tengo un servidor en producción con el nombre de host de mi empresa (host1.domain.tld) con los nameserver (ns1.miempresa.com y ns2.domain.tld), recientemente he adquirido otro servidor que quiero llamar con el mismo dominio (host2.domain.tld) y los nameserver (ns3.domain.tld y ns4.domain.tld), el dominio mi empresa está alojado en host1, y he configurado las DNS para apuntar al nuevo servidor:



    host2.domain.tld - A - 192.192.192.1
    host2.domain.tld - NS - ns3.domain.tld
    host2.domain.tld - NS - ns4.domain.tld



    Todo funciona correctamente a excepción de una asunto... cuando quiero enviar un correo de una cuenta de host2 a host1, no puede ser enviado... mensaje de error:
    ----------
    SMTP error from remote mail server after initial connection: 421 Downstream server error
    ----------

    Cuando envío mensaje de host1 a host2 llegan sin problemas. Send OK.

    ¿Que puede estar pasando? Gracias de antemano por vuestra ayuda
     
  2. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    Could you let us know the output from /var/log/exim_mainlog on both servers for one of the affected messages? EX:

    Code:
    exigrep user@domain /var/log/exim_mainlog
    Thank you.

    Translation:

    Hola,

    ¿Podría informarnos la salida de / var / log / exim_mainlog en ambos servidores para uno de los mensajes afectados? EX:

    Code:
    exigrep user@domain /var/log/exim_mainlog
    Gracias.
     
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  3. Juan Jesus Santos Garcia

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    Hola, gracias por su rápida respuesta.

    En host2 (no puede enviar a host1)

    2017-03-03 22:03:51 1cjuKQ-0000Fj-5o == info@domain.info[/EMAIL] R=dkim_lookuphost
    T=dkim_remote_smtp defer (0) H=domain.info [192.192.192.1]: SMTP error from
    remote mail server after initial connection: 421 Downstream server error


    En host1 (no hay problema en enviar a host2)

    2017-03-03 22:04:02 1cjuaj-0046yY-Le => info@domain2.es[/EMAIL] R=dkim_lookuphost T=dkim_remote_smtp H=domain2.es [192.192.192.2] X=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256 CV=no C="250 OK id=1cjubN-0000Pc-8J"
    2017-03-03 22:04:02 1cjuaj-0046yY-Le Completed



    NOTA: El problema solo se reproduce cuando se envía un mail de host2 a host1, si envío a otro servidor no hay problema.
     
    #3 Juan Jesus Santos Garcia, Mar 3, 2017
    Last edited by a moderator: Mar 3, 2017
  4. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    Are you sure there are no firewall rules on "Host1" blocking the connection from "Host2"? Try to telnet from "Host2" to "Host1" via a command such as:

    Code:
    telnet host1 25
    Thank you.

    Translation:

    Hola,

    ¿Está seguro de que no hay reglas de firewall en "Host1" bloqueando la conexión desde "Host2"? Trate de telnet de "Host2" a "Host1" a través de un comando como:

    Code:
    telnet host1 25
    Gracias.
     
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