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Sendmail features ...

Posted on 1998-09-14
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Last Modified: 2008-03-10

 I can contact my host and send/recive e-mails just fine. The only problem I find is the e-mail addresses.
 Here it is:

 telnet localhost 25
 welcome etc. Sendmail 8.8.8 etc.
 EXPN, or VRFY root
 250 - Administrator<root@localhost>

 How can I disable EXPN and VRFY in sendmail. On my ISP they have done another trick(NOT DISABLING) that when you issue:

 VRFY root
 250 - root@ISP.com
 VFRY(or EXPN) user_that_does_not_exist
 250 - user_that_does_not_exist@ISP.com
 
 I like this second trick much better ... any help, suggestions??
 
 Thanks,
 
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Question by:elvaaa
2 Comments
 
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Accepted Solution

by:
JYoungman earned 30 total points
ID: 1586793
In sendmail.cf use
   OPrivacyOptions=noexpn,novrfy
or the slightly stronger
   OPrivacyOptions=goaway

Other things you may wish to set for PrivacyOptions are
detailed in the Sendmail Operations Guide.  A convenient way to read it is with
  groff -me -Tascii /usr/doc/sendmail/doc/op/op.me |less

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Author Comment

by:elvaaa
ID: 1586794
Excellent, Thank you ...
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