Qmailrocks installation error on CentOS 6.6

Question

I've managed to install qmail-1.03 using the qmailrocks procedure on CentOS 6.6.

When I telnet to port 25, I get an error in the qmail log below:

[root@www qmail]# telnet domain.com 25 Trying XXX.XXX.XXX.XXX... Connected to domain.com. Escape character is '^]'. Connection closed by foreign host.

@40000000550795d1198e8c94 /var/qmail/bin/qmail-smtpd: error while loading shared libraries: libkeyutils.so.1: failed to map segment from shared object: Cannot allocate memory

Answer 1

This is a common problem. You have a line in /service/qmail-smtpd/run that reads something like

softlimit -m 30000000

to set a memory limit. Simply raise that limit.