[krbdev.mit.edu #2429] Returned mail: see transcript for details

[Mail Delivery Subsystem via RT]

The original message was received at Fri, 19 Mar 2004 00:15:22 -0500 (EST)
from [134.159.111.200]

   ----- The following addresses had permanent fatal errors -----
<rnd_lc_char at cfl.rr.com>
    (reason: 550 5.1.1 unknown or illegal alias: rnd_lc_char at cfl.rr.com)

   ----- Transcript of session follows -----
... while talking to ms-mta-03.cfl.rr.com.:
>>> DATA
<<< 550 5.1.1 unknown or illegal alias: rnd_lc_char at cfl.rr.com
550 5.1.1 <rnd_lc_char at cfl.rr.com>... User unknown
<<< 554 5.5.0 No recipients have been specified.