Don't bounce you're overquota messages... just reject them :) at mail gateway level at smtp dialogue, this way you will be saving resources on scanning and later perhaps on bouncing them from any place :)
http://postfixquotareject.ramattack.net :) :) > Mark Goodge schrieb: >> Dan Slay wrote: >>> Thanks, that's what I have read. Which is why this make things more >>> awkward. >>> >>> I cannot see that holding a recipient list is a solution. If, for >>> instance, you relay for thousands of domains all going to different >>> MTA's that hold each individual domains recipient list, its not really >>> that straight forward and may impact performance? >> >> Postfix can generate and maintain an internal recipient list by means of >> a recipient check on the downstream MTA before accepting mail to a >> previously unknown user. See these pages for information on how it >> works: >> >> http://www.postfix.org/postconf.5.html#reject_unverified_recipient >> http://www.postfix.org/ADDRESS_VERIFICATION_README.html#recipient >> >> Correctly configured, with the right degree of persistance in the cache, >> this will have minimal impact on performance while also significantly >> reducing backscatter. The actual tradeoff between effectiveness and >> performance is dependent on how long data is cached for; if your system >> can cope with it then it's best not to cache at all as that's the only >> way to ensure zero backscatter. But even a fairly lengthy cache time >> will be sufficient to prevent the majority of backscatter, provided that >> the recipient email addresses don't get switched off very often. >> >> Mark > > additional you may have problems with mail servers using greylisting > during recipient verification, so normally you should only do this if > you sure that no greylisting is done for your servers ip on the > verification servers and they give a i.e 550 for not existing mail > adresses as well your server should do so after verification result, > therefor having a recipient list is the right way > > -- > Best Regards > > MfG Robert Schetterer > > Germany/Munich/Bavaria >
