Prevent Mail Delivery Subsystem Notifications: A Step-by-Step Guide
Are you tired of receiving spammy mail delivery subsystem notifications every time an email fails to send? This guide will help you disable these notifications effectively, ensuring a less cluttered inbox.

Understanding Mail Delivery Subsystem Notifications
Mail Delivery Subsystem (MDS) notifications are automatic messages generated by mail servers when an email fails to reach its recipient. These notifications can fill your inbox with unnecessary clutter, especially if you regularly send emails to incorrect addresses or if your recipients have filled their mailboxes. Luckily, you can disable these notifications and keep your inbox tidy.
Why Disable Mail Delivery Subsystem Notifications?
- Reduce Clutter: MDS notifications can flood your inbox, making it hard to find important emails.
- Improve Focus: Constant notifications can be distracting, leading to decreased productivity.
- Prevent Confusion: Misleading notifications can lead to worries over whether your emails are being delivered.
How to Disable Mail Delivery Subsystem Notifications
The method to disable mail delivery subsystem notifications depends on the email service or mail server you are using. Here’s how to do it for some major platforms:
1. For Gmail Users
- Log into your Gmail account.
- Click on the gear icon in the upper right corner and select See all settings.
- Go to Filters and Blocked Addresses.
- Click on Create a new filter.
- In the From field, input "Mail Delivery System" or "Mail Delivery Subsystem" and hit Create filter.
- Check the box next to Delete it or Skip Inbox (Archive it). Then click Create filter.
2. For Outlook Users
- Open Outlook and navigate to your inbox.
- Click on Rules in the Home tab, then select Manage Rules & Alerts.
- Click on New Rule.
- Select Apply rule on messages I receive and click Next.
- Check from people or public group, and then select Mail Delivery System from your contact list.
- Click Next and select delete it.
- Finish the rule by following the prompts, and click OK.
3. For Yahoo Mail Users
- Log in to your Yahoo Mail account.
- Click on the gear icon and select More Settings.
- Select Filters.
- Click Add New Filter.
- Enter a name for your filter, then under From, type "Mail Delivery System".
- In the Choose Folder section, select Trash or Archive.
- Click on Save.
4. For Custom Mail Servers
If you are using a custom mail server (like Postfix, Exim, etc.), follow these steps:
- Access the server via SSH.
- Edit the mail configuration file. For Postfix, it’s usually located at
/etc/postfix/main.cf
. - Add the following line:
- Save the changes and restart the mail service using:
systemctl restart postfix
(for Postfix)
disable_mds_notifications = yes
Final Thoughts
By following the above steps, you can effectively manage and disable mail delivery subsystem notifications across various platforms. This allows you to maintain a cleaner inbox and focus more on essential communications.
If you experience persistent issues or the notifications continue despite the changes, consider reviewing your email settings or consulting your email provider’s support for further assistance. Stay organized and streamline your email experience today!
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