How do I tell qmail to do more deliveries at once?
qmail-remote processes. Answer: Decide how many deliveries you want to allow at once. Put that number into control/concurrencyremote. Restart qmail-send as in question 7.1. If your system has resource limits, make sure you set the descriptors limit to at least double the concurrency plus 5; otherwise you’ll get lots of unnecessary deferrals whenever a big burst of mail shows up. Note that qmail also imposes a compile-time concurrency limit, 120 by default; this is set in conf-spawn. 8.2. How do I keep a copy of all incoming and outgoing mail messages? Answer: Set QUEUE_EXTRA to “Tlog\0” and QUEUE_EXTRALEN to 5 in extra.h. Recompile qmail. Put ./msg-log into ~alias/.qmail-log. You can also use QUEUE_EXTRA to, e.g., record the Message-ID of every message: run | awk ‘/^$/ { exit } /^[mM][eE][sS][sS][aA][gG][eE]-/ { print }’ from ~alias/.qmail-log. 8.3. How do I switch slowly from sendmail to qmail? I’m thinking of moving the heaven.af.mil network over to qmail, but first I’d like to give
It’s running only 20 parallel qmail-remote processes. Answer: Decide how many deliveries you want to allow at once. Put that number into control/concurrencyremote. Restart qmail-send as in question 7.1. If your system has resource limits, make sure you set the descriptors limit to at least double the concurrency plus 5; otherwise you’ll get lots of unnecessary deferrals whenever a big burst of mail shows up.
