[CentOS] saslauthd question and sendmail

the commande

[root @ r13 *** ~] # sasl2-shared-mechlist 
Available mechanisms: 
GSSAPI, ANONYMOUS CRAM-MD5, DIGEST-MD5, LOGIN, PLAIN, NTLM 
Library media: 
EXTERNAL, NTLM, PLAIN, LOGIN, DIGEST-MD5, CRAM-MD5, ANONYMOUS, GSSAPI 
[root @ r13151 ~] # 

indicates the presence of all options the customer smtp 

in the page 
http://www.sendmail.org/~ca/email/auth.html 

it indicates that you have to edit 
/etc/sysconfig/saslauthd 
it seems to me 

I have to try to change the option pam present in the file 

in plain login 

but after impossible to restart 

/sbin/service saslauthd restart 

is not working anymore

my question is related Sendmail 
I try to configure 

I thank you for all your returns 

sl

ps:Excuse my bad English I am French