[Techtalk] List Acting Weird?

[Kai MacTane]

Hey, has anyone else been getting bounce messages when they try to send to 
this list, like so:

(crimson-moon.com is my mailserver)

 >Hi. This is the qmail-send program at crimson-moon.com.
 >I'm afraid I wasn't able to deliver your message to the following addresses.
 >This is a permanent error; I've given up. Sorry it didn't work out.
 >
 ><techtalk at linuxchix.org>:
 >216.126.84.1 does not like recipient.
 >Remote host said: 550 5.1.1 <techtalk at linuxchix.org>... User unknown
 >Giving up on 216.126.84.1.

216.126.84.1 resolves to "hub.org".

If I re-send the messages that are bounced, they seem to go through fine on 
the second or third attempt. Does anyone know what's up here?

                                                 --Kai MacTane
----------------------------------------------------------------------
"A spark has passed between us, now
  A momentary recognition..."
                                                 --Oingo Boingo,
                                                  "Skin"