Modified one call and one exception point related to on_behalf_of() use for email sending.

- Legacy-Id: 16008

ietf/secr/announcement/views.py

@@ -8,7 +8,7 @@ from ietf.message.models import AnnouncementFrom
 from ietf.ietfauth.utils import has_role
 from ietf.secr.announcement.forms import AnnounceForm
 from ietf.secr.utils.decorators import check_for_cancel
-from ietf.utils.mail import send_mail_text, on_behalf_of
+from ietf.utils.mail import send_mail_text, maybe_on_behalf_of
 
 # -------------------------------------------------
 # Helper Functions
@@ -83,7 +83,7 @@ def confirm(request):
             extra = {'Reply-To':message.reply_to}
             send_mail_text(None,
                            message.to,
-                           on_behalf_of(message.frm),
+                           maybe_on_behalf_of(message.frm),
                            message.subject,
                            message.body,
                            cc=message.cc,

ietf/utils/mail.py

@@ -191,7 +191,8 @@ def on_behalf_of(frm):
         name, addr = parseaddr(frm)
     domain = addr.rsplit('@', 1)[-1]
     if domain in settings.UTILS_FROM_EMAIL_DOMAINS:
-        raise ValueError("Using send_mail_on_behalf_of() with an address (%s) in %s is misleading.  Please use send_mail()" % (addr, settings.UTILS_FROM_EMAIL_DOMAINS))
+        unreachable('2019-03-06')
+        return frm
     if not name:
         name = addr
     name = "Datatracker on behalf of %s" % name