Bug in sending mail

When I send the message in the attached buffer, it seems to get truncated at something like point 4018, I don't know why. I'm using message mode under Gnus. I'm pretty sure that the number of characters is important, because when I sent to "xemacs-patches(a)xemacs.org" it gets truncated at the first "wo" in "wonderworks", while if I send it to "stephen(a)xemacs.org" (7 characters shorter) it gets truncated at "wonderwor", ie, exactly balancing the seven characters difference in addressee name length. If I send it to my local user "steve" it once again gets truncated at the same buffer position (incidentally exonerating the rest of the Internet, I think). "Gnus v5.10.1" "XEmacs 21.5 (beta12) \"carrot\" (+CVS-20030508) [Lucid] (i686-pc-linux, Mule) of Fri May 9 2003 on tleepslib" Exim version 3.36 #1 built 12-Mar-2003 20:59:47 -- Institute of P