[exim] Max header size

Currently we are trying to send to e-mail to 500 students (no we are not
using mailing list for this) and it is failing. We suspect it is
hitting the max header limit. Any idea on this? We are running 4.60 on
a 64-bit SLES9 box.

Regards

Sujit

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Sujit Choudhury
ISLS
University of Westminster
Ext 3851 / 1779