User ManualEmail Discussion Group User Guide ReferencesExample of a message sent to a subscriber by's BRDS (Bounce Re-delivery System)

Example of a message sent to a subscriber by's BRDS (Bounce Re-delivery System)

When your subscriber's email hosting service bounces back an error message to our system, they are automatically sent a message by our Bounce Re-Delivery System (BRDS).

Your subscriber does not need to understand the entire content of this message. Technical information is included in the message and is meant to be shared with their email hosting service. The details of the bounce issue can help solve the delivery problem.

Example Bounce Message

Dear Mailing List Subscriber:

Your email hosting company blocked the following messages(s) that you signed up for:

   General Discussion Topics for emailgroup Members

You can read your missing emails(s) at:

   User Name = emailgroup
   Password = mygroup

And here's an example of the email subject that we have on one rejection.

   RE: [emailgroup] Today's Update

The following information contains some technical information which is actually meant for your email hosting company. Please file a support ticket with them and copy and paste the following details:

2020-10-20 13:58:39 1kUs90-0001ZJ-V7 ** F=<> R=dkim_edg T=dkim_edg_smtp [123.456.78.999] X=TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 CV=no DN="OU=Domain Control Validated,": SMTP error from remote mail server after end of data: 500 Message denied access due to content filters in effect

Ask them to fix the problem so that your next email is delivered.

Your email was sent from our delivery machines.  The particular delivery machine(s) used to deliver your email is: at IP Address at IP Address at IP Address

The next message may come from a different delivery machine of ours. The best solution is for your email hosting company to whitelist all of our IP Addresses, which are listed at:

Ask them to cut and paste all of our IP Addresses, so that they will not block future emails.

If your email hosting company whitelists by the From Address, then the Envelope From Address(es) is:

We use that address since this is a mailing list, and not personal email from the list owners' personal address(es), in this case:

Your email hosting company can contact us at

Action by your email hosting company is the only solution, but if you want to share your frustrations with your list moderator, please forward this email to

Thank you.


p.s.  And if you want to unsubscribe or change your address, just click the following link:

General Discussion Topics for emailgroup Members:
1302 Waugh Dr. #438
Houston, TX 77019

Important Elements of the Message

Here is an explanation of some important parts of the message: