SymptomsI have domains with mailboxes and mailing list(s) on my Parallels Plesk Panel (PP) server that I have just migrated to another server. After the migration, all mail list members received welcome messages about being added to their mail list again. That is confusing for my customers; how do I disable those messages?
CauseThe wrong Mailman configuration was used during the migration.
ResolutionThe issue will be fixed in a future release of our product.
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WorkaroundTo disable welcome notifications from being sent to mail list subscribers, you need to set the value of send_welcome_msg in the Mailman configuration to 0 on the destination server before the migration:
1. Back up the original file (just in case):
# cp /usr/lib/mailman/bin/add_members /usr/lib/mailman/bin/add_members_backup
2. Then replace the red line in the /usr/lib/mailman/bin/add_members file:
166 listname = args.lower().strip()
167 nfile = None
168 dfile = None
169 send_welcome_msg = None
170 admin_notif = None
send_welcome_msg = 0
3. Restart Mailman:
# /etc/init.d/mailman restart
4. Now you may start the migration.
This flag controls whether or not the welcome message is sent to new subscribers.