Re: Sendmail & SMTP EXPN & VRFY

[Thomas Mandl <Thomas Mandl neuroth co at>]

Calvin Lam wrote:
> 
> hi all,
> 
> Is it possible to enable and disable the EXPN and VRFY command of SMTP of
> sendmail 8.9.3? Thanks.
> 
> Calvin
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Yes it is.

If you build your mail-hub's sendmail.cf from the m4 sources then add 
define(`confPRIVACY_FLAGS',`authwarnings,noexpn,novrfy')
at the end of your master sendmail.mc (the m4 source) file. Now rebuild
the sendmail.cf file.

If you prefer to change this in sendmail.cf directly find and modify (or
add it if it doesn't exist) the folowing line:
# privacy flags
O PrivacyOptions=authwarnings,noexpn,novrfy

I would recommend to do changes only in the m4 source files and let m4
rebuild your sendmail.cf!

regards
Thomas

-- 
Ing. Thomas Mandl            

System and Network Administrator     phone: +43 1 877 56 45/53
Thomas NEUROTH Ges.m.b.H.              fax: +43 1 876 49 20
Hietzinger Hauptstrasse 22          e-mail: Thomas Mandl neuroth co at
A-1130 Vienna/Austria              NIC-HDL: TM4373, RIPE-HDL: TM539-RIPE