Option: Mail delivery - disabled

Dear friends,
on the mailman maillist from WSF discuss the option: "Mail delivery" was changed from enabled to disabled without my activity. Do you know about some conditions, that that can be? Here this version entry in the header i found:
X-Mailman-Version: 2.1.20
I am shure, that the admin people never will do it. Maybe, it is a side effect from other configuration or administration activities?
PS: Jai Sen and Subbu Sastry are the admins of the WSF discuss list. Orsan Senalp is the admin of the NetworkedLabour discuss list.
many thanks and greetings, willi St. Elena, Venezuela

On 03/09/2016 01:21 PM, willi uebelherr wrote:
Delivery can be disabled by bounce processing, by user action or by the list admin. If it is still disabled, the list admin can see why in the web list admin GUI in the Membership List, however if you have reenabled delivery, the reason is gone.
If delivery was disabled by bounce processing, there is information in Mailman's bounce log, but otherwise the change won't be logged.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

On 03/09/2016 01:21 PM, willi uebelherr wrote:
Delivery can be disabled by bounce processing, by user action or by the list admin. If it is still disabled, the list admin can see why in the web list admin GUI in the Membership List, however if you have reenabled delivery, the reason is gone.
If delivery was disabled by bounce processing, there is information in Mailman's bounce log, but otherwise the change won't be logged.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
participants (2)
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Mark Sapiro
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willi uebelherr