On , wie...@porcupine.org wrote:
post...@nisny.com:
On , wie...@porcupine.org wrote:
> post...@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?
You haven't said if this is a persistent problem. One telnet may
work now, but that does not exclude the possibility of an eralier
problem.
What does Postfix log with "delay=a/b/c/d" when a connection is lost?
Are you going through a stateful firewall/NAT that drops sessions
to soon?
I can speculate until the cows come home, but I prefer not to.
Wietse
Sorry, I'm not trying to be difficult but I don't know what your
speculation might run and therefore what questions you'll have.
There is NO NAT or firewall.
relay=mx4.icloud.com.akadns.net[17.172.34.67]:25, delay=177,
delays=0.3/0.01/177/ 0, dsn=4.4.2, status=deferred (lost
connection with mx4.icloud.com.akadns.net[17.172.34.67] while receiving
the initial server greeting)
