On Mon, Dec 21, 2015 at 01:31:03PM +0100, Marc Haber wrote: > On Mon, 21 Dec 2015 15:04:23 +0300, Odhiambo Washington > <[email protected]> wrote: > >2015-12-21 10:24:17 1a9cA9-0005Hu-3s == [email protected] > >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. -- Eugene Berdnikov -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
