[TriLUG] Re: Problems with Sendmail

Brian Weaver cmdrclueless at gmail.com
Fri Mar 3 16:05:04 EST 2006


OK, I still need help [on so many levels it not funny :-].

Apparently the F=g flag doesn't work for DSN messages. Anyone got any ideas?

On 3/3/06, Brian Weaver <cmdrclueless at gmail.com> wrote:
> OOPS, appears the link didn't quite go where I wanted it.
>
> ----
> 30.8.22 F=g
>
> Suppress From:<>
> (V8.6 and above)
>
>     The special address <> is used as the envelope sender when
> sendmail bounces a mail message. This address is intended to prevent
> bounced messages from themselves bouncing. Unfortunately, not all
> configuration files properly handle this form of sender address. The
> stock SunOS configuration files prior to Solaris 2.3, for example,
> caused sendmail to enter an endless loop when processing <>. Also,
> some UUCP implementations get confused when they are executed with
> command line arguments of:
>
> -f <>
>
>     As an interim measure, until all programs learn to correctly
> handle the <> address, you may use the F=g flag to suppress that
> address for selected delivery agents. If the F=g flag is set for a
> delivery agent, it uses the value of $g (see Section 31.10.16) in
> place of the <>, where $g contains $n (usually MAILER-DAEMON see
> Section 31.10.26, $n) with an @ and your domain name appended.
>
> ----
>
> On 3/3/06, Brian Weaver <cmdrclueless at gmail.com> wrote:
> > No probably not a tenable solution.... MXLogic shouldn't get business
> > when it cannot provide proper support.
> >
> > I think I may have found the solution. The mailer flags may need to be modified
> >
> > http://www.unix.org.ua/orelly/networking/sendmail/ch30_08.htm#SML2-CH-30-SECT-8-22
> >
> > -Brian
> >
> > On 3/3/06, Lance A. Brown <lance at bearcircle.net> wrote:
> > > Brian Weaver wrote:
> > > > Does any Sendmail guru out there know how to force sendmail to place a
> > > > valid or invalid address into the From lilne for the MDN messages?
> > >
> > > That's a bad solution, begging for mail loops and similar not-fun
> > > results.  MDNs need to have an empty envelope mail from to prevent the
> > > MDN from generating bounce mail, etc. that might cause another MDN to go
> > > out, repeat...
> > >
> > > Tell friend to get a decent mail cleaning server. :-)  I know, probably
> > > not a tenable solution.
> > >
> > > --[Lance]
> > >
> > > --
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> >
> >
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> >
> > /* insert witty comment here */
> >
>
>
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