> > The way I understand it is, this Quota service was built specifically > for postfix. (I only have postfix, have not used any other MTA) > The "quota-status" executable is in you libexec directory. ( I compiled > my dovecot instance, hence is is not in "regular" directory)
Thanks. I also responded to Aki, but to close the loop: evidently quota-status is newer than the version of dovecot on my Ubuntu 12.04 machine. So I'll need to upgrade. > The "quota_status_*" are responses to postifx. AFAIK, these are the only > 3 possible options. > > Please see ( > https://sys4.de/en/blog/2013/04/08/postfix-dovecot-mailbox-quota/ ) for > a detailed info on this > > When Postfix MTA is "inline" with the sender, and if you have correctly > configured the quota service, it will check if the recipient's mailbox > can accept mails. If the recipient is able to accept mail dovecot > responds with "DUNNO" (as configured in "quota_status_success" ) to let > postifx continue with its sender checks. if the recipient's mail box is > unable to accept mails, the dovecot responds with "552 5.2.2 Mailbox is > full" (as configured in "quota_status_overquota"), this will prevent > postfix from accepting mail and will respond with 552 status . All this > is documented in that blog. > Thanks. I saw the link to Hildebrandt's blog on the wiki. (BTW, his Postfix book is still great!) And I understood the example. But it didn't cover the answers to my questions. Aki covered most of them. Thanks again, Michael