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[8.201] RDNS missing

Tribmos
I saw the other thread but it is locked currently.

I have been noticing a large increase of 'RDNS missing' entries in the Mail Log.

Typically a user sends me a message that they have not been getting mail (often the client sends it from a gmail or such to inform them).  Verify the log and see the RDNS entries.  Pop over to MXToolbox and run their checks and see it labeled as OK on the RDNS check.

So I am at a loss as to why it is occurring.

For example: seagullscientific.invisionzone.com - this is a support forum for label software, it got a RDNS missing despite it appears to be all correct (unless i'm missing something).  Astaro logged it as coming from 208.67.212.34


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Parents
  • 0
    I'm assuming by your report of "false positives" that you are saying 8.202 is still blocking based on FCrDNS and not back to pure rDNS. Correct?

    I'm out of town this week and don't want to update my server remotely unless the update will actually help with this specific issue.

    Thanks

    Danita
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  • 0
    I'm assuming by your report of "false positives" that you are saying 8.202 is still blocking based on FCrDNS and not back to pure rDNS. Correct?

    I'm out of town this week and don't want to update my server remotely unless the update will actually help with this specific issue.

    Thanks

    Danita
Children
  • 0 in reply to danitaz
    I actually have noticed a couple more mail servers getting flagged for Failed RDNS that with previous versions... but in all cases there were RDNS configurations issues at the sending SMTP server end in play.

    CTO, Convergent Information Security Solutions, LLC

    https://www.convergesecurity.com

    Advice given as posted on this forum does not construe a support relationship or other relationship with Convergent Information Security Solutions, LLC or its subsidiaries.  Use the advice given at your own risk.

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