Carlos Lopez writes:
5- Then courier send back the failed message to the message's sender and the external email server reply with this error:Sep 3 09:04:03 localhost courierd: id=00206007.4A9FD553.000011C2,from=<[email protected]>,addr=<[email protected]>: Message Failed. Sep 3 09:04:03 localhost courierd: id=00206007.4A9FD553.000011C2,from=<[email protected]>,addr=<[email protected]>,status: failure Sep 3 09:04:03 localhost courierd: completed,id=00206007.4A9FD553.000011C2 Sep 3 09:04:03 localhost courierd: started,id=00206007.4A9FD553.000011C2,from=<>,module=dsn,host=,addr=<[email protected]> Sep 3 09:04:03 localhost courierd: started,id=0020600B.4A9FDAE3.000019C5,from=<>,module=esmtp,host=yahoo.com,addr=<[email protected]> Sep 3 09:04:03 localhost courierd: completed,id=00206007.4A9FD553.000011C2 Sep 3 09:04:03 localhost courierd: Waiting. shutdown time=none, wakeup time=Thu Sep 3 10:00:17 2009, queuedelivering=2, inprogress=1 Sep 3 09:04:03 localhost courieresmtp: id=0020600B.4A9FDAE3.000019C5,from=<>,addr=<[email protected]>: 250 Backscatter bounce dropped. Sep 3 09:04:03 localhost courieresmtp: id=0020600B.4A9FDAE3.000019C5,from=<>,addr=<[email protected]>,success: delivered: backscatter bounce dropped Sep 3 09:04:03 localhost courieresmtp: id=0020600B.4A9FDAE3.000019C5,from=<>,addr=<[email protected]>,status: success After calling the sender at [email protected], he responsed that he does not have any message from my server with a failure notice. Is [--->id=0020600B.4A9FDAE3.000019C5,from=<>,addr=<[email protected]>,success: delivered: backscatter bounce dropped<----] a normal action on courier?
Yes. This is backscatter suppression. See the explanation under "Backscatter suppression" in Courier's INSTALL file, and the courier(8) man page.
You can turn off backscatter suppression and deliver these bounces, however keep in mind that doing so makes you vulnerable to getting blacklisted, if you end up being used as a mailbomb proxy.
It is a common mistake to believe that Email is a reliable delivery mechanism. It is not.
Please help, since messages on the queue is filling up the HDD and what i have to do is some times delete some of those messages as a way to solved since I got no clue on how to solve it.
Well, messages should not be queueing up. As you've seen yourself, when Courier holds a message to a recipient in the queue, because of a temporary delivery failure, it stops accepting any more mail to the same recipient.
So, you should not have more than one or two messages in the queue to the same recipient.
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