Sam Varshavchik wrote:
Bowie Bailey writes:
I just received an email through another email list. This email was
obviously from a real list member based on the headers and content.
The strange thing is that the From address shows as the local user
who owns the virtual maildirs on my server.
I also noticed that SpamAssassin marked this message with a rule
stating that there were no lowercase letters in the From address.
But when I look at it, there are only lowercase letters. It seems
like Courier rewrote the From address for some reason -- possibly
when Maildrop resubmitted the message for delivery to our internal
mailserver. Would this happen for an empty From address? Any
other reason?
I have this set in my maildroprc for mail delivery (along with a
patched deliver.C to enable the -f option):
import SENDER
SENDMAIL="/usr/lib/courier/bin/sendmail -f \"$SENDER\""
Is there any case where SENDER would default to the local user for
an external email?
Nope.
The sendmail man page lists all the special environment variables that
control address rewriting.
I read up on all of that. I'm not setting any of those variables.
I guess I'll just put it down to gremlins since it only happened once.
If it starts happening again, I'll continue to investigate.
3 messages in net.sourceforge.lists.courier-usersRE: [courier-users] From address rewr...
