[Exim] SMTP timeout while connected to <server> after DATA

Hi,

Exim can't deliver any mail (except local ones); when it tries to do so,
it waits for 1 or 2 periods of 5 minutes and fails. The error message is
in the subject line.

Google gave me this and almost only this post:
http://www.exim.org/pipermail/exim-users/Week-of-Mon-19990517/012494.html
Quote from this mail :
> Some MTAs are pretty braindead: If you message contains a
> \0-character at the end, they won't recognize the trailing
> "." of the DATA-section.

# cat 191CDz-0001dB-00-D
191CDz-0001dB-00-D
Ici du texte;
# hexdump 191CDz-0001dB-00-D
0000000 3931 4331 7a44 302d 3030 6431 2d42 3030
0000010 442d 490a 6963 6420 2075 6574 7478 3b65
0000020 000a
0000021

        ^^ I though that was it...

 # hexdump -C 191CDz-0001dB-00-D
00000000  31 39 31 43 44 7a 2d 30  30 30 31 64 42 2d 30 30  |191CDz-0001dB-00|
00000010  2d 44 0a 49 63 69 20 64  75 20 74 65 78 74 65 3b  |-D.Ici du texte;|
00000020  0a                                                |.|
00000021
 # hexdump -c 191CDz-0001dB-00-D
0000000   1   9   1   C   D   z   -   0   0   0   1   d   B   -   0   0
0000010   -   D  \n   I   c   i       d   u       t   e   x   t   e   ;
0000020  \n
0000021

But... no. Everything seems allright. I hope one of you can tell we what
to check.

Cheers,
-- Dan