On 7.8.2013, at 9.29, Ulrich Zehl <ulrich-dove...@topfen.net> wrote: > On Tue, Aug 06, 2013 at 09:20:13PM +0200, Thomas Leuxner wrote: >> Now everything in between seems to create SMTPD rejections in some cases >> _or_ queue the mail and let it hit the quota in other cases. That's my >> whole point... > > I'm sorry, I don't get your point. > > Are you saying that quota-status does not eliminate all over-quota bounces? > > That's to be expected. quota-status does not reserve quota when questioned, > it only tells Postfix whether enough space is currently free or not. This > is not free of race conditions, and therefore cannot eliminate all late > bounces, even when quota-status has all the information, including size.
I think it would work also to do the check in SMTP RCPT TO stage and do quota bouncing only there. In LMTP/LDA stage use infinite quota to avoid bouncing. Yeah, user might get a little bit over quota (even over quota_grace) but not by much.
