How do I prevent host lookup failed messages

asmithjr

• December 22, 2015 15:17

I have accounts that are not getting their emails. I see messages like host lookup failed (116.199.219.46 does not match any IP address for mail.theiremailhost.co.nz) I've put the IP in Sender verification bypass IP addresses but that does not help. i also put the emails in *@theirmailhost.co.nz and *@mail.theirmainhost.co.nz into the whitelist in theirSpamAssassin settings.

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  cPanelMichael

  • December 22, 2015 21:30

  Hello :) Please let us know if the following thread is helpful: Reverse DNS Lookup Thank you.

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  asmithjr

  • December 22, 2015 21:43

  I do have that in my exim.conf but I also see it has message = Your mail server IP address ($sender_host_address) has no reverse DNS PTR That is not the message I see in the email Trace stats I see "host lookup failed ... does not match any IP address for ..."

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  asmithjr

  • December 22, 2015 21:46

  I do have that in my exim.conf but I also see it has message = Your mail server IP address ($sender_host_address) has no reverse DNS PTR That is not the message I see in the email Trace stats I see "host lookup failed ... does not match any IP address for ..."

  
  also, this only seems to be from this sender at [Removed]

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  cPanelMichael

  • February 02, 2016 20:18

  but I also see it has message = Your mail server IP address ($sender_host_address) has no reverse DNS PTR

  
  Have you contacted your provider to request they configure RDNS for the IP address used to send email? Thank you.

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