[exim] Reducing length of the "next input" string in logs

Hallo.

Is there easy way of getting rid of garbage like this? The SMTP
commands are small, thus no need in such big chunks in the logs, isn't
it?

#v+
2007-07-06 17:16:26 SMTP protocol synchronization error (next input sent too so
on: pipelining was advertised): rejected "</p>" H=(mx5.biz.mail.yahoo.com) [85.
108.174.88] next input=" <p align=3D"left">We offer a free gift box with every
VIP wat<span style=\r\n=3D"FONT-SIZE: 2px; FLOAT: right; COLOR: white"> unl </
span>ch ordered. Y"
#v-

Thanks.
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