Peeked at the source code, but it is outside my abilities to modify. Wonder if it could be a feature request :)
On Tue, Oct 15, 2013 at 12:53 PM, Brent Jones <[email protected]> wrote: > What about extending the "defer_ok" function to ACLs other than callouts > and virus scanning? > That way, if you have an ACL that does a DB lookup, you can add the > /defer_ok switch to the condition, and allow that ACL to accept itself if > there is a problem? > > If you do this on blacklist or whitelist style ACLs, and not actual user > lookups or routers, you can safely pass them, error on the side of caution > if you wanted to just accept the message. > I'll look at the source, to see what that defer_ok looks like > > > On Sat, Oct 5, 2013 at 8:31 AM, Graeme Fowler <[email protected]> wrote: > >> On Fri, 2013-10-04 at 18:16 -0400, josh trier wrote: >> > I am writing an ACL that a few of my relay servers will use. All is fine >> > with code. However if the central database server can not be connected >> to I >> > want to disable the ACL to prevent messages from being rejected. >> > >> > Right now this is what happens if DB conn fails (example of stopping >> mysqld >> > service) >> > >> > SMTP>> 451 Temporary local problem - please try later451 Temporary >> > local problem - please try later >> > LOG: MAIN REJECT >> > H=localhost [127.0.0.1] F=<[email protected]> temporarily >> > rejected after DATA: MYSQL connection failed: Can't connect to >> > local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) >> >> Although that is indeed a rejection, it's a temporary one. Well-behaved >> remote servers receiving that will simply re-queue the mail and try >> again later. >> >> Jasen's readsocket approach might have legs, but I think I'd create a >> shell or perl script that can give you a "DB is available" or "DB is >> dead" response and call that from a warn statement using $run. >> >> That way you could set a variable and check for its value in later ACLs, >> at the cost of making one extra DB connection per message. >> >> How to do that will be left as an exercise :) >> >> Graeme >> >> >> -- >> ## List details at https://lists.exim.org/mailman/listinfo/exim-users >> ## Exim details at http://www.exim.org/ >> ## Please use the Wiki with this list - http://wiki.exim.org/ >> > > > > -- > Brent Jones > [email protected] > -- Brent Jones [email protected] -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
