[exim] Trying to figure out what this means

2008-07-06 09:16:27 1KFWuZ-0001O3-00 H=an-out-0708.google.com
[209.85.132.251] F=<val.linch@???> temporarily rejected after
DATA: invalid "condition" value "true}}"

Never seen this before. Trying to figure out where to look other than I
know it's somewhere in the data acl.