[RESEND][RFC PATCH 0/6] Fork brute force attack mitigation (fbfam)

[Mel Gorman]

On Sat, Sep 12, 2020 at 11:36:52AM +0200, John Wood wrote:
> On Sat, Sep 12, 2020 at 12:56:18AM -0700, Kees Cook wrote:
> > On Sat, Sep 12, 2020 at 10:03:23AM +1000, James Morris wrote:
> > > On Thu, 10 Sep 2020, Kees Cook wrote:
> > >
> > > > [kees: re-sending this series on behalf of John Wood <john.wood at gmx.com>
> > > >  also visible at https://github.com/johwood/linux fbfam]
> > > >
> > > > From: John Wood <john.wood at gmx.com>
> > >
> > > Why are you resending this? The author of the code needs to be able to
> > > send and receive emails directly as part of development and maintenance.
> 
> I tried to send the full patch serie by myself but my email got blocked. After
> get support from my email provider it told to me that my account is young,
> and due to its spam policie I am not allow, for now, to send a big amount
> of mails in a short period. They also informed me that soon I will be able
> to send more mails. The quantity increase with the age of the account.
> 

If you're using "git send-email" then specify --confirm=always and
either manually send a mail every few seconds or use an expect script
like

#!/bin/bash
EXPECT_SCRIPT=
function cleanup() {
	if [ "$EXPECT_SCRIPT" != "" ]; then
		rm $EXPECT_SCRIPT
	fi
}
trap cleanup EXIT

EXPECT_SCRIPT=`mktemp`
cat > $EXPECT_SCRIPT <<EOF
spawn sh ./SEND
expect {
	"Send this email"   { sleep 10; exp_send y\\r; exp_continue }
}
EOF

expect -f $EXPECT_SCRIPT
exit $?

This will work if your provider limits the rate mails are sent rather
than the total amount.

-- 
Mel Gorman
SUSE Labs