Sorry if this is a little off topic.
I am trying to speed up my outbound mail. I am running a set of ezines and
we are currently sending around 3 million emails per day. Currently I have
a process that envokes qmail-inject for each message. I am thinking of
doing a first attempt delivery inside my program and only if that fails,
hand it off to qmail-inject.
My intent is to create a master process that will set everything up and then
fork off serveral hundred children to chew on the list. I am hoping that my
process can handle 90% or more of the messages with no disk accesses and no
additional processes.
My problem is doing the DNS lookups. I have not found any good
documentation on the process at the 'C' level. I have stared at
qmail-1.03/dns.c for a couple hours now. This code is rather sparse on
comments.
Can anybody point me to some online or in print sources of information on
the subject. I am in particular looking for documented examples of the
res_query, res_search, snf dn_expand functions and the related data
structures.
Bryan White
You can't deny that it is not impossible, can you.
