The mailing list for listmasters using Sympa

[Olivier Salaün - CRU <address@concealed>]

Hi Brian,

Brian Riffle a écrit :

In the list config, under management of Bouncers, there is a default threshold of 45 points.  We have a list that has sent out 3 emails, all 3 bounced to the same user, but they show "0" points.  How is this calculated? 

The algorithm used the compute the score is explained in the documentation : http://www.sympa.org/wiki/manual/bounces#bounce_management

The score evaluation main parameters are:

• Bounces count: the number of bouncing messages received by Sympa for the user.
• Type rate: bounces are classified depending on the type of errors generated on the user side. If the error type is mailbox is full (i.e. a temporary 4.2.2 error type), the type rate will be 0.5, whereas permanent errors (5.x.x) have a type rate equal to 1.
• Regularity rate: this rate tells whether bounces were received regularly, compared to list traffic. The list traffic is deduced from the msg_count file data.

The score formula is:

Score = bounce_count * type_rate * regularity_rate

To avoid making decisions (i.e. defining a score) without enough relevant data, the score is not evaluated if:

• The number of received bounces is lower than minimum_bouncing_count (see minimum_bouncing_count).
• The bouncing period is shorter than minimum_bouncing_period (see minimum_bouncing_period).

You may have a bounce score of 0 if the user started bouncing recently or if he did generate a low amount of non delivery reports.
I know this score of 0 is confusing ; we'll try to make this information more straightforward in future relesases of Sympa.

Also, is there a way I'm not seeing to send the owner an email on every bounce?  We want our instructors to notify the students in class to update their email address.  We have found that some large ISP's will start marking all emails from our domain as spam if we attempt to deliver to too many invalid emails on their system.

You can get this behavior if you disable the automatic handling of bounces by Sympa. All you have to do is change the <list>-owner mail alias as follows :

mylist-owner: address@concealed, address@concealed