mail failed for me as well 
  Failed address: mouse at 
rodents-montreal.org 
aek - I sent off-list mail about this (most briefly, the sending host
is dropping the connection after 44-plus seconds, at a point where
5321, 2821, and 1123 all specify that any client-side timeout SHOULD be
at least five minutes).  The mail was accepted by 
mx1.ezwind.net
Sep 30 12:03:18 Stone sendmail[22051]: MAA24618: to=aek at 
bitsavers.org, ctladdr=mouse
(101/101), delay=00:00:01, xdelay=00:00:01, mailer=esmtp, 
relay=mx1.ezwind.net.
[199.188.211.138], stat=Sent (2.0.0 Ok: queued as 3F3564E615)
(that timestamp is UTC-0400), but if you don't get it for some reason,
you might try mouse at openface.ca, or if all else fails there's the phone
number I put in the original post.
/~\ The ASCII                             Mouse
\ / Ribbon Campaign
 X  Against HTML                mouse at 
rodents-montreal.org
/ \ Email!           7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B