Re: New mail server slow connecting to web server

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On 05/24/2018 09:10 PM, Gary Stainburn wrote:
name resolution isn't the problem as I can nslookup both ways without
problems


Can you provide more detail here regarding what tests you performed?  Long delays are usually a timeout on a reverse DNS lookup (that is, a PTR lookup) on the connecting IP address.

Connect to the server, and get the address that the server sees as its peer either from the log or using "ss -o state established -t".  Use "time host $ip" to test the reverse lookup.  Send the output to the list.

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