When you run the MSP form of sendmail (Section 2.6.2), you use two different configuration files, the sendmail.cf file and the submit.cf file. But it is possible to configure sendmail so that it uses a different statistics file with each configuration file. In that case, you can use this -c command-line switch to specify use of the submit.cf file, and its corresponding statistics file:

% mailstats -c          use submit.cf to locate the statistics file 

If you are not set up to use MSP, use of this switch might yield the following error:

mailstats: /etc/mail/submit.cf: No such file or directory