problems with inc when mail body has lines starting with From

[J.R. van Ossenbruggen]

Hi, (this is probably a FAQ, could not find it though...)

I'm having problems with email messages where the body contains lines
that start with the word "From".  Inc is splitting these messages up.
Is this a bug in inc or am I doing something wrong?  Could anybody
give me a hint?

Thanks,

        Jacco

PS: I'm currently running Redhat 6.1, nmh-1.0-2. 
    The problem does not occur when using inc on IRIX (MH 6.8.3).