postfix-users May 2014 archive
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postfix-users: Re: lost connection with ]server] while receiving

Re: lost connection with ]server] while receiving the initial server greeting

From: <postfix_at_nospam>
Date: Sat May 03 2014 - 00:12:16 GMT
To: postfix-users@postfix.org

On , wietse@porcupine.org wrote:
> postfix@nisny.com:
>> I recently moved out mail operations to a new server. The old server
>> is
>> running Postfix 2.8 and the new server 2.10.
>>
>> We had some initial problems with some private blacklists and the new
>> IP
>> but those were resolved. However, I had a curious problem sending
>> mail
>> to icloud.com addresses. Postfix was reporting:
>>
>> lost connection with mx5.icloud.com.akadns.net[17.172.34.68] while
>> receiving the initial server greeting
>>
>> to all MX servers for adadns.net.
>
> What is your servers's public IP address? I suspect that PTR
> or A lookups are taking too long when the remote SMTP server is
> trying to determine your server's hostname.
>
> Wietse

209.170.151.3

It doesn't seem to be taking long (from 3rd party location 191 msec) and
wouldn't that have affected as well dong a telnet?