Re-enable bouncing Mailman3 list members

00README.md

I upgraded Mailman3 from <3.3.1 to >= 3.3.1 without heeding the instructions and as a result, had a ton of my list members erroneously set to disabled due to bounces.

These scripts scan your bounce log file and re-enable anyone who was disabled. You could also easily modify it to just re-enable everyone, but I didn't want to do it unilaterally just in case.

unbounce.py

from mailman.interfaces.member import DeliveryStatus

def unbounce(mlist, bounce_log):
    emails = []
    with open(bounce_log) as logfh:
        for line in logfh:
            if line.strip().endswith(", disabling delivery."):
                splitline = line.split()
                email = splitline[6]
                list_id = splitline[9].rstrip(",")
                if list_id == mlist.list_id:
                    emails.append(email)
        for member in [mlist.members.get_member(email) for email in emails]:
        msg = f"{member.address.email:30} {member.delivery_status} {member.bounce_score}"
        if member.delivery_status == DeliveryStatus.by_bounces:
            print(f"x {msg}")
            member.preferences.delivery_status = DeliveryStatus.enabled
            member.bounce_score = None
        else:
            print(f"  {msg}")

unbounce.sh

#!/bin/bash
set -euo pipefail

BOUNCE_LOG='/var/log/mailman3/bounce.log'

. /opt/mailman3/bin/activate

for list_id in $(grep disabling "$BOUNCE_LOG" | awk '{print $10}' | sed 's/,$//' | sort | uniq); do 
    echo "[$list_id]"
    PYTHONPATH=. mailman withlist -r unbounce.unbounce -l "$list_id" "$BOUNCE_LOG"
done