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BT Connect and Grey Listing

Discussion in 'E-mail Discussions' started by keat63, Jul 7, 2015.

  1. keat63

    keat63 Well-Known Member

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    Looking in the Grey Listing logs again this morning and I can see a message ID which is greylisted.

    This is an official email from a known customer who uses BTConnect, and I can see from the first message ID that the email was greylisted sent from IP 157.55.234.xxx

    Then 30 minutes later the same email hit my server, with the same message ID, but this time from a different IP 157.55.234.yyy

    Of course, this is from a different IP, so is GreyListed again.

    Is it feasible that BTConnect have a large range of mailserver IP's, and when the mailserver does it's retry, it could do so from a different IP each time.
    If this is the case then it could take many hours for this email to be accepted ??
     
    #1 keat63, Jul 7, 2015
    Last edited: Jul 7, 2015
  2. keat63

    keat63 Well-Known Member

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    Just a quick update.
    It seems that my theory may be correct.
    The email which was sent by the customer at 09:13 eventually landed in the users inbox at 11:30 after being deffered at least 3 or 4 times.
     
  3. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    One workaround to this issue would be to search out the range of IP addresses used by BTConnect for SMTP and add those IP ranges to the Greylisting trusted hosts list.

    Thank you.
     
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