Am 08.01.2013 20:16, schrieb Wietse Venema: > Reindl Harald: >>> Big deal. Now I can block all mail for gmail.com by getting 100 >>> email messages into your queue >> >> how comes? >> how do you get gmail.com answer to any delivery from you with 4xx? > > He wants to temporarily suspend delivery when site has 5 consecutive > delivery errors without distinguishing between SMTP protocol stages > (such an "ignore protocol stage" switch could be added to Postfix). > > To implement a trivial DOS, I need 5 consecutive messages in his > mail queue, plus a handful accounts that don't accept mail. > > I have no idea where he got the 100 from - that number was not part > of his original problem description
the 100 was out in the game by yourself :-) however, it would make sense to delay the next try to as example @aon.at after 10,20,30 4xx errors while send out a newsletter and re-start try to deliver this messages 5,10,15 minutes later on the other hand: if you do not see snse here and are not willing to spend time in this idea -> postfix is your baby and still one of the greatest pieces of software i was allowed to use in many years and we will not die if you reject the feature wish
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