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Date:	Sun, 27 Dec 2020 15:53:27 +0100
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From:	Tomas By <tomas AT basun DOT net>
To:	cygwin AT cygwin DOT com
Subject:	Re: sendmail/setuid
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Hi,

Ok, thanks. I have now got to the point where it works if I start it
from a "run as administrator" command shell.

I start Sendmail by "sendmail start" in /etc/rc.d/init.d/".

What is the easiest way to automate this without interaction? Ideally
from a normal account (which is also an "administrator" if that matters).

I want to have a .bat file in the Startup folder that starts Sendmail.

/Tomas



On Thu, 24 Dec 2020 20:12:17 +0100, Brian Inglis wrote:
> 
> On 2020-12-24 04:17, Tomas By wrote:
> > I'm using the Cygwin Sendmail (8.14), and am getting this in the log
> > file of a program that is supposed to send an email.
> > 
> > | 451 4.0.0 drop_privileges: setuid(18) failed: Operation not permitted
> > | RSET
> > | 250 2.0.0 Reset state
> > 
> > Does this come from Cygwin? It would be odd if it is from the program.
> > 
> > There is no user 18. The Windows user id's (I think) are 500, 501,
> > 1000, 1002, 1003.
> 
> $ getent passwd 18
> SYSTEM:*:18:18:U-NT AUTHORITY\SYSTEM,S-1-5-18:/home/SYSTEM:/bin/bash
> 
> > What is the simplest solution?
> > 
> > I had it working before I reinstalled, but I tried many things, most
> > of which I do not want to repeat.
> Process or program may need to be run elevated with admin privileges,
> or configured to not require them if that is even possible.
> The easiest way to do that I have found is to create a Windows task to
> run elevated (with highest privileges) under user SYSTEM and run a
> shell invoking a shell script.
> The task may then start up Cygwin services to run elevated under user
> SYSTEM or however each is configured.
> 
> -- 
> Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
> 
> This email may be disturbing to some readers as it contains
> too much technical detail. Reader discretion is advised.
> [Data in binary units and prefixes, physical quantities in SI.]
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