mwills@x102a (wills ms 01309) (06/30/91)
barnett@grymoire.crd.ge.com (Bruce Barnett) writes: >In article <1991Jun20.022606.1680@shaman.com> jiro@shaman.com (Jiro Nakamura) writes: >> In article <FWP1.91Jun19183837@Jester.CC.MsState.Edu> fwp1@CC.MsState.Edu >> (Frank Peters) writes: >>> I realize how easy it is to spoof via smtp. But I would have thought this >> Great security hazard. >We use this bug to work around another bug when sending >mail inside GNU emacs. But since it doesn't *add* any additional security ^^^^^^^^^---- NN and GNU emacs mail users, please read on. At my site, it is necessary to override the default Reply-To: field because my mailhost does not add the domain part. It just sends user@host (i.e. not user@host.harris.ess.com). The fellow who suggested that I correct this manually (via nn "mail-headers" and "new-headers" variables) also pointed out an optional (?) Return-receipt-to: field which automatically sends an end-to-end acknowledgement when the mail is delivered (or perhaps when it is read?). Is this supported by all smtp servers? Although I recognize the spoofing potential, the Reply-to: and Return-receipt-to: fields are extremely valuable when used correctly. I also realize that proper system configuration would take care of this, but in the absence of a sendmail literate sysadmin, I must do this myself. My question is this: How can I enable these features (Reply-to: header and end-to-end ack) in all my mail, rather than just mail and postings sent from inside "nn" (e.g. GNU emacs rmail and vm)? Is there a comp.mail.headers FAQ or internet RFC which describes other header options available to the user? -- - Scott ------------------------------------------------------------------------------ M. Scott Wills, Mail Stop: 102-4844 INTERNET: mwills@x102a.ess.harris.com Harris Corporation UUCP: uunet!x102a!mwills Government Aerospace Systems Division CCMail: harris.mwills01 P.O. Box 94000 FAX: 407-729-3211 Melbourne, Florida 32902 Voice: 407-729-3283 ------------------------------------------------------------------------------