Messages in this thread | | | Subject | About loops and EMAIL->NEWS->EMAIL setups... | Date | Wed, 18 Feb 1998 10:34:16 +0200 (EET) | From | Matti Aarnio <> |
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Duplicate messages are again seen on lists again due to misconfigured MAIL->NEWS->MAIL gateway. In a harsh move ALL redestb.es users were removed from all of VGER lists to stop that from reoccurring.
Here is a sort of "Standard Sermon" I have been brewing for these cases. Folks, understand it!
Doing unidirectional feeding of LINUX-lists to local news system is simple and ok, but trying to feed things back out from news to the list is classified as advanced rocket science which thy shall never try!
This is because in our long experience very rare people are able to do that without causing loops and message duplication on the lists! You don't see it on News, because News systems suppress messages with duplicate message-ids, however email does not... Thus:
NEVER BUILD BIDIRECTIONAL LIST <-> NEWS GATEWAY!
If you think you are sophisticated enough to do it, have a more humbler approach... Refer to our experience!
Those gateways need duplicate suppression, and are NOT any simple animals! If you are an Email-Wizard that can do it properly, have your setup approved by VGER admins, write a HOWTO on it, and then we MAY make an exception on it -- and possibly approve other gws which are built with those instructions..
... but the moment it fails, we zap it at first, and if we are in good mood, we might tell you that the feed has been cut off.
/Matti Aarnio <matti.aarnio@tele.fi> <mea@vger.rutgers.edu> <mea@nic.funet.fi>
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