GREYLISTING ON CLUSTERED SYSTEM

Discussion in 'Mail Gateway: HA Cluster' started by KOSTAS TSIVERIOTIS, May 17, 2019.

  1. KOSTAS TSIVERIOTIS

    KOSTAS TSIVERIOTIS New Member

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    Hello Everybody

    I am considering deploying a cluster proxmox email system with 2-4 nodes.
    I was wondring how greylisting works on a cluster, with round robin mx records.
    Are the the cluster nodes aware that a push-back / tryagain later has already happened on a node of the cluster, in order to accept the mail message next time, if it arrives on another node?

    Thanks.
     
  2. dietmar

    dietmar Proxmox Staff Member
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    Yes, the greylisting database is synced between nodes.
     
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  3. KOSTAS TSIVERIOTIS

    KOSTAS TSIVERIOTIS New Member

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    Thank you,
    so if there is a cluster of 4 nodes,
    and the mx records contain all these nodes with same preference,

    an incoming mail will be pushed back by (example: node 3) and accepted at once (example) by node 1?
     
  4. dietmar

    dietmar Proxmox Staff Member
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    yes
     
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  5. KOSTAS TSIVERIOTIS

    KOSTAS TSIVERIOTIS New Member

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    Thank you. Very convenient.
     
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