Milter-greylist

Fredrik Nyberg DC <nba@...> wrote:

> I am, however, a bit curious about the syncing of the database between
> peers: what happens if the peer is down for more than 1024 connections?
> Can the databases be synced after the peer comes up, or are the
> databases permanently out of sync?

You have missing entries on the host that was down, but that only cause
extra delivery delays. Here is a sample scenario:

0) MX2 is down
1) senders sends an e-mail, it tries MX1
2) MX1 adds the mail to the greylist, and tempfail
3) MX1 attemps to sync with MX2 but cannot and the queue has overflowed
4) MX2 comes back on-line
5) sender try a resend to MX2
6) MX2 adds the mail to the greylist, and tempfail
7) MX2 syncs with MX1
8) sender try a resend to MX2
9) MX2 accepts the mail   

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu@...