restricting size on sendmail

[elovkoff]

I have an RH73 box and I would like to restric all incoming/outgoing mail to 25 MB. Those are the instructions I've found on the net:
"Find records starting with M and containing P= in sendmail.cf,
and add a M=<number of bytes> parameter.
# Local and Program Mailer specification
Mlocal, P=/bin/mail, F=flsSDFMmnP, M=10485760, S=10, R=20, A=mail -d $u
Mprog, P=/bin/sh, F=lsDFMeuP, M=10485760, S=10, R=20, A=sh -c $u"

This the way lines look in my sendmail.cf
Mlocal, P=/usr/bin/procmail, F=lsDFMAw5:/|@qSPfhn9, S=EnvFromL/HdrFromL, R=EnvToL/HdrToL,
T=DNS/RFC822/X-Unix, A=procmail -Y -a $h -d $u
Mprog, P=/usr/sbin/smrsh, F=lsDFMoqeu9, S=EnvFromL/HdrFromL, R=EnvToL/HdrToL, D=$z:/,
T=X-Unix/X-Unix/X-Unix, A=smrsh -c $u

Should I replace my local entry "S=EnvFromL/HdrFromL" with
S=10 ?

What is S=EnvFromL/HdrFromL stands for?
Thanks.

[tolstoy]

Configging sendmail can be a real beast. Do yourself a favor and admin it with something like Webmin. It will make your life a lot easier. You should be able to set a MB limit easily with Webmin.