On Fri, Mar 08, 2013 at 10:20:20AM -0800, Quanah Gibson-Mount wrote:
> My point is that
> the connections are not as persistent as one may desire. ;) I.e.,
> OpenDKIM stays connected forever until the server closes.
This is not a feature, it is a bug. OpenDKIM is a multi-threaded
process that does not periodically exit to be replaced by a fresh
process. As such it does not tolerate memory leaks in its own code
or in the libraries it uses.
Postfix avoids this design pattern as much as possible. Other than
the tiny master server, only the queue manager (which does no table
lookups directly, and does not use SSL, GSSAPI, LDAP, ...), the
pickup server and tlsmgr run indefinitely. All three are simple and
have minimal interactions with non-Postfix resources.
> Postfix
> is not (currently) doing that for me, but as you note, may well be
> related to the max_use setting.
This is a feature. Also this keeps the load on your LDAP servers
more balanced, connections don't stick to one server forever.
--
Viktor.
