Sometimes mail is totally inconsistent.  I don't know what the source of
these troubles is, but it happens every now and then.  MAILER seems to
be more picky than LISTSERV as to what is valid.  The questions is, what
REALLY IS VALID ?
 
> Received: by UIUCVMD (Mailer X1.23) id 2156; Thu, 09 Oct 86 09:11:17 CDT
> Date: Thu, 09 Oct 86 09:11:14 CDT
> From: Network Mailer <MAILER@UIUCVMD>
> Subject: Undelivered mail
> To: LISTSERV@UIUCVMD
>
> Your mail was not delivered to some or all of its
> intended recipients for the following reason(s):
>
> Syntax error in field-  From
>
> --------------------RETURNED MAIL FILE--------------------
> Received: by UIUCVMD (Mailer X1.23) id 2153; Thu, 09 Oct 86 09:11:14 CDT
> Date:         9 October 1986 08:46:12 CDT
> Reply-to:     Protocol Converter discussions <IBM7171@UIUCVMD>
> Sender:       Protocol Converter discussions <IBM7171@UIUCVMD>
> Comment:      X-To: <IBM7171@AT>
> From:         <U17135@AT>
> To:           Tom Holodnik <TH37@CMUCCVMA>
>
>
> Peter, How about translating all your printer data to the x'80'-x'FF'
> range (the Yale 7171 drivers do this anyway). Have your 7171 flags set
> for 8 bit data and parity disabled. I think then that you can have the
> Sytek modem near the 7171 set to PARITY NONE and the modem nearest the
> printer set to match the printer parity. Sytek should be able to present
> a parity that the printer likes and hopefully you can then use XON/XOFF
> normally. Or am I overlooking something?...
> ú MAILER 8003 10/09/86