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Campus Mailing Lists, Bounce rate too high

Information about "bounce rate too high" causes, the rate setting and resetting the notification

Possible Causes

  1. The most common cause of a bounce is an invalid email address subscribed to a list.  In this case, the owner should “delete” the email address from the list.  More details below.
  2. The list server misinterprets automated replies as a bounce.   While most auto replies are interpreted correctly, we’ve seen this bug in the software and have reported it to the development team,

The Setting:

Mail list owners can change the notification setting at:  Admin > Edit List Config > Bounces   This setting defines the bounce rate (% of subscribers bouncing) required before the sever notifies the list owner bounces exceed the set values.  The default values are:  warn=30%, halt=50%.   More info at:  

lists bounces page screenshot

Resetting the Bounce Rate:  

To reset the bounce the bounce rate go to:  Admin > Bounces.   Review the email list, select the checkbox next to the email address you want to “reset” or “delete” from the list. 

  • If you have a large list, change the view to “500”. 
  • To select all email addresses click the checkbox at the top of the check box column.

Keywordsbounce, mail, list, bounce rate, email   Doc ID79880
OwnerSympa S.GroupUniversity of Illinois Technology Services
Created2018-02-05 10:50:20Updated2024-05-21 17:29:59
SitesUniversity of Illinois Technology Services
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