On Wed, 8 Mar 2000, Liam Healy wrote:
> Exim 2.05 on Debian 2.1r2
>
> Most mail is received successfully without trouble. However, some
> mail never arrives despite repeated attempts from the sending host.
From the FAQ:
Q0018: Exim is timing out after receiving and responding to the DATA command
from one particular host, and yet the client host also claims to be
timing out. This seems to affect only certain messages.
A0018: (A) This problem has been seen with a network that was dropping all
packets over a certain size, which mean that the first part of the SMTP
transaction worked, but when the body of a large message started
flowing, the main data bits never got through the network. See also
Q0021.
(B) This can also happen if a machine has a broken TCP stack and won't
reassemble fragmented datagrams.
(C) A very few ISDN lines have been seen which failed when certain data
patterns were sent through them, and replacing the routers at both end
of the link did not fix things. One of them was triggered by more than 4
X's in a row in the data.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
