exim - Should I ignore rejectlog

[Chris Bannister <mockingbird@ihug.co.nz>]

Hi,

Noticed this in exim (Exim version 3.35 #1 built 11-Jan-2005 21:18:34)

2005-03-08 01:31:48 refused relay (host) to <china9988@21cn.com> from
<china9988@21cn.com> H=(aaa) [61.73.143.203] (failed to find host name
from IP address)

Should I ignore it?

-- 
Cheers
Chris
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