On Mon, 21 Dec 2015 16:19:18 +0300, Evgeniy Berdnikov <bd4@???>
wrote:
>On Mon, Dec 21, 2015 at 01:31:03PM +0100, Marc Haber wrote:
>> On Mon, 21 Dec 2015 15:04:23 +0300, Odhiambo Washington
>> <odhiambo@???> wrote:
>> >2015-12-21 10:24:17 1a9cA9-0005Hu-3s == johnowino2000@???
>> >R=outbound_throttled T=throttled_smtp defer (-18) H=mx-eu.mail.a
>> >m0.yahoodns.net [188.125.69.79]: Remote host closed connection in response
>> >to end of data
>>
>> Yahoo - a service provider too big to care for standards - is dropping
>> your connection at a place where it should not do that without telling
>> you why.
>
> IMHO, posted logs show indications of broken Path MTU Discovery.
> Traffic dump between client and Yahoo relay may clarify this issue.
If that would be the case, the SMTP session would most probably not
get beyond the first block of DATA; and it would time out afterwards.
In the current case, the remote host is actively ending the
connection.
Greetings
Marc
--
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Marc Haber | " Questions are the | Mailadresse im Header
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Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 621 72739834
