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From: guy@sun.uucp (Guy Harris)
Newsgroups: net.mail
Subject: Re: No valid "From" line? Foo. I don't get a "To" line.
Message-ID: <2225@sun.uucp>
Date: Sat, 25-May-85 16:29:38 EDT
Article-I.D.: sun.2225
Posted: Sat May 25 16:29:38 1985
Date-Received: Thu, 30-May-85 02:11:30 EDT
References: <17078@mgweed.UUCP> <499@down.FUN> <7548@Glacier.ARPA> <503@down.FUN> <884@sdcsvax.UUCP>
Organization: Sun Microsystems, Inc.
Lines: 12

> > It happens (no To: line) because /bin/mail, the standard UNIX mailer,
> > doesn't put in a To: line.  Next question.
> 
> It does not put a To: line if there is only one recipient.  If there is more
> than one recipient, it does put in a To: line, even if there is one already.

It depends on which standard UNIX mailer you're talking about.  The "To:"
line stuff was added to "/bin/mail" in System III; System V has a flag to
either enable this (with it disabled by default) or disable it, I forget
which.

	Guy Harris