sendmail issue

[onlyu_dr]

Hi Experts,
we have edited sendmail.mc file as per messaging team requirement. Modified 'SMART_HOST' entry in /etc/mail/sendmail.mc. Then customer was able to receive mails. Everything is fine now. But I forget that after we edit .mc file we need to generate a sendmail.cf file also with the following command.
#m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

It is a very important production server. Now my question is if I fire this command now will there be any impact.. do u have any idea on this kind of scenario. Please explain me ..
# more /etc/redhat-release
Red Hat Enterprise Linux Server release 5.3 (Tikanga)

Regards,
Ani

[rcgreen]

It's strange. If you have not issued the m4 command,
you have not made any changes to sendmail.cf.
If everything is working, you may decide to do nothing.

The smart host directive causes your server to send
all mail to another server instead of attempting to send it
directly to the destination. If your server is at home,
on a "consumer grade" internet connection, this may be
necessary, or if destination servers refuse to accept mail
from you.