Great Circle Associates Majordomo-Users
(April 1994)
 

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Subject: Re: outgoing aliases and protecting them
From: Brent Chapman <brent @ mycroft . GreatCircle . COM>
Date: Thu, 28 Apr 1994 15:22:19 -0700
To: "John P. Rouillard" <rouilj @ terminus . cs . umb . edu>
Cc: Arnold de Leon <arnold @ synopsys . com>, majordomo-users @ greatcircle . com
In-reply-to: Your message of Thu, 28 Apr 1994 17:35:54 -0400

"John P. Rouillard" <rouilj@terminus.cs.umb.edu> writes:

# In message <199404281952.MAA20834@mango.synopsys.com>, Arnold de Leon writes:
# > Majordomo uses "hidden" aliases to actually send mail
# > to the members of the lists (typically listname-out).
# > 
# > Anyone who knows the name of the list can send mail to
# > the members directly.  Sendmail version 8 makes it easier
# > for recipients to discover this name since it is very
# > good at recording envelope information in the
# > "Received" headers.
# 
# Actually you could always get it because resend has the outgoing list
# name right in the command invocation which is viewable with SMTP vrfy.

Depends on the invocation of "resend".  If you use the "@argfile"
mechanism (which allows you to put all the arguments for "resend" into
a file, then reference the filename), then you can put the outgoing
list name in the argfile, where sendmail won't see it.

I added the argfile capability because I had several lists whose
"resend" arguments were growing beyond 256 characters, but it's also
very effective at hiding information from sendmail.

For instance, the "majordomo-users" aliases here are:

	majordomo-users: "|/usr/local/mail/majordomo/wrapper resend
	        @/usr/local/mail/lists/majordomo-users.resend"
	majordomo-users-outgoing:
		:include:/usr/local/mail/lists/majordomo-users

and the file /usr/local/mail/lists/majordomo-users.resend contains:

	-a /usr/local/mail/lists/majordomo-users.passwd
	-b Majordomo-Users-Approval@GreatCircle.COM
	-p bulk
	-M 10000
	-l Majordomo-Users
	-f Majordomo-Users-Owner
	-h GreatCircle.COM
	-s
	majordomo-users-outgoing

-Brent
--
Brent Chapman         | Great Circle Associates  | Call or email for info about
Brent@GreatCircle.COM | 1057 West Dana Street    | upcoming Internet Security 
+1 415 962 0841       | Mountain View, CA  94041 | Firewalls Tutorial dates

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