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1. Inspect and edit the %%PREFIX%%/etc/smfsav.conf file
2. Add these lines to your Sendmail configuration file (usually sendmail.mc):
    define(`confMILTER_MACROS_HELO', confMILTER_MACROS_HELO`, {verify}')dnl
    INPUT_MAIL_FILTER(`smf-sav', `S=unix:/var/run/smfs/smf-sav.sock, T=S:30s;R:4m')dnl
3. Put line smfsav_enable="YES" to /etc/rc.conf file
4. Run `service smfsav start`
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