While default value SOFTLIMIT_OPTS="-m 16000000" in /var/qmail/control/conf-common works fine on x86, on amd64 qmail-pop3sd require more memory - here is error from kernel log: kern.alert: grsec: denied resource overstep by requesting 17567744 for RLIMIT_AS against limit 16000000 for /usr/bin/sslserver[sslserver:28311] uid/euid:0/0 gid/egid:0/0, parent /usr/bin/runsv[runsv:1496] uid/euid:0/0 gid/egid:0/0 So, I think this value should be changed to, say, 20000000, to let all qmail services run both on x86 and amd64 in default setup.
InCVS