bug#47076: 27.1; Unwanted warnings about unqualified recipient addresses from message.el

[Peter Schultze]

Sending a message in Rmail to a local address always triggers a warning
"Email address localuser looks invalid; send anyway? (y or n)".
from lisp/gnus/message.el

This only occurs in V. 27.1, but not in V. 26.3.

This is not useful on systems where the MTA is configured
to handle local addresses.

This could be related to bug#23054 





In GNU Emacs 27.1 (build 1, x86_64-redhat-linux-gnu)
 of 2020-08-20 built on buildhw-x86-03.iad2.fedoraproject.org
System Description: Fedora 33 (Thirty Three)

Recent messages:
Loading /usr/share/emacs/site-lisp/site-start.d/clang-format.el (source)...done
Loading /usr/share/emacs/site-lisp/site-start.d/clang-include-fixer.el 
(source)...done
Loading /usr/share/emacs/site-lisp/site-start.d/clang-rename.el (source)...done
Loading /usr/share/emacs/site-lisp/site-start.d/cmake-init.el (source)...done
Loading /usr/share/emacs/site-lisp/site-start.d/desktop-entry-mode-init.el 
(source)...done
Loading /usr/share/emacs/site-lisp/site-start.d/mercurial-site-start.el 
(source)...done
Loading /usr/share/emacs/site-lisp/site-start.d/protobuf-init.el (source)...done
Loading /usr/share/emacs/site-lisp/site-start.d/systemtap-init.el 
(source)...done
For information about GNU Emacs and the GNU system, type <f1> C-a.
Making completion list...

Configured using:
 'configure --build=x86_64-redhat-linux-gnu
 --host=x86_64-redhat-linux-gnu --program-prefix=
 --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr
 --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc
 --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64
 --libexecdir=/usr/libexec --localstatedir=/var
 --sharedstatedir=/var/lib --mandir=/usr/share/man
 --infodir=/usr/share/info --with-x=no --with-modules --with-json
 'CFLAGS=-DMAIL_USE_LOCKF -O2 -flto=auto -ffat-lto-objects -fexceptions
 -g -grecord-gcc-switches -pipe -Wall -Werror=format-security
 -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS
 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong
 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
 -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
 LDFLAGS=-Wl,-z,relro'

Configured features:
SOUND GPM DBUS NOTIFY INOTIFY ACL LIBSELINUX GNUTLS LIBXML2 ZLIB XIM
MODULES THREADS LIBSYSTEMD JSON PDUMPER GMP

Important settings:
  value of $LC_ALL: C
  value of $LC_TIME: C
  value of $LANG: en_US
  locale-coding-system: nil

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs
format-spec rfc822 mml mml-sec password-cache epa derived epg epg-config
gnus-util rmail tool-bar rmail-loaddefs text-property-search time-date
mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr
mail-utils term/xterm xterm regexp-opt cus-edit easymenu cus-start
cus-load wid-edit clang-rename clang-include-fixer let-alist json subr-x
map seq byte-opt bytecomp byte-compile cconv clang-format cl-macs gv xml
cl-loaddefs cl-lib disp-table tooltip eldoc electric uniquify ediff-hook
vc-hooks lisp-float-type tabulated-list replace newcomment text-mode
elisp-mode lisp-mode prog-mode register page tab-bar menu-bar
rfn-eshadow isearch timer select mouse jit-lock font-lock syntax
facemenu font-core term/tty-colors frame minibuffer cl-generic cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote threads dbusbind
inotify multi-tty make-network-process emacs)

Memory information:
((conses 16 71832 8051)
 (symbols 48 8042 1)
 (strings 32 21064 2031)
 (string-bytes 1 647153)
 (vectors 16 10019)
 (vector-slots 8 107450 6508)
 (floats 8 32 397)
 (intervals 56 235 116)
 (buffers 1000 14))

-- 
Peter Schultze                          
UCLA Computer Science Department