NEED HELP file "exim.smtpauth" lost configuration when use command "csf -r"

[9toy]

Dear All

I NEED HELP

I have 3 servers with install csf and config Exim SMTP AUTH Restriction
two servers works normal, bus one server file "exim.smtpauth" lost configuration when use command "csf -r".

# ll exim.smtpauth
-rw-r--r-- 1 root root 9524 Oct xx xx:xx exim.smtpauth

# csf -r

# ll exim.smtpauth
-rw-r--r-- 1 root root 132 Oct xx xx:xx exim.smtpauth


I must do this all the time when using the command csf -r.
#cp exin.smtpauth.bak exin.smtpauth

how to fix it?

Best regareds,
9Toy

[9toy]

** The problem has been solved **

Sorry, I forgot to change this line.
# The option SMTPAUTH_RESTRICT must be enabled to use this option
CC_ALLOW_SMTPAUTH = ""