stock centos 7 based Cyrus-imapd not working - troubleshooting suggestions?

[Marc Rassbach]

Trying to troubleshoot a centos 7/Cyrus-imap configuration.   The process 
is not running correctly - the /var/log/maillog fills up with messages and 
once this grep string is executed this is what is seen:

grep -v Fatal maillog | grep -v abnormally | grep -v "ptions not presen"

Jun 18 12:23:42 mail master[20269]: setrlimit: Unable to set file 
descriptors limit to -1: Operation not permitted
Jun 18 12:23:42 mail master[20269]: retrying with 4096 (current max)
Jun 18 12:23:42 mail ctl_cyrusdb[20277]: recovering cyrus databases
Jun 18 12:23:42 mail ctl_cyrusdb[20277]: done recovering cyrus databases
Jun 18 12:23:42 mail master[20269]: unable to setsocketopt(IP_TOS): 
Operation not supported
Jun 18 12:23:42 mail ctl_cyrusdb[20314]: checkpointing cyrus databases
Jun 18 12:23:42 mail ctl_cyrusdb[20314]: done checkpointing cyrus 
databases



The firewall is off (to attempt to see if the setsocketopt would go away):
# systemctl status firewalld
  firewalld.service - firewalld - dynamic firewall daemon
    Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; 
vendor preset: enabled)
    Active: inactive (dead)

And SELinux is set to not stop things.
# getenforce
Permissive



strace /usr/lib/cyrus-imapd/cyrus-master isn't really being helpful either

(lots snipped)
access("/etc/system-fips", F_OK)        = -1 ENOENT (No such file or 
directory)
open("/etc/imapd.conf", O_RDONLY)       = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=692, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0x7f259e1b8000
read(3, "configdirectory: /var/lib/imap\np"..., 4096) = 692
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x7f259e1b8000, 4096)            = 0
uname({sys="Linux", node="mail.example.com", ...}) = 0
close(0)                                = 0
open("/dev/null", O_RDWR)               = 0
close(1)                                = 0
open("/dev/null", O_RDWR)               = 1
close(2)                                = 0
open("/dev/null", O_RDWR)               = 2
close(3)                                = -1 EBADF (Bad file descriptor)
dup(0)                                  = 3
close(4)                                = -1 EBADF (Bad file descriptor)
dup(0)                                  = 4
setrlimit(RLIMIT_NOFILE, {rlim_cur=RLIM64_INFINITY, 
rlim_max=RLIM64_INFINITY}) = -1 EPERM (Operation not permitted)
open("/etc/localtime", O_RDONLY|O_CLOEXEC) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=3559, ...}) = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=3559, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0x7f259e1b8000
read(5, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\6\0\0\0\6\0\0\0\0"..., 
4096) = 3559
lseek(5, -2272, SEEK_CUR)               = 1287
read(5, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\7\0\0\0\7\0\0\0\0"..., 
4096) = 2272
close(5)                                = 0
munmap(0x7f259e1b8000, 4096)            = 0
(lots more snipped)

Nothing in the strace output for setsocketopt.


Suggestions on what to do to figure out why on
# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)

the installed packages

# rpm -q -a | grep cyrus
cyrus-imapd-2.4.17-8.el7_1.x86_64
cyrus-sasl-devel-2.1.26-20.el7_2.x86_64
cyrus-sasl-lib-2.1.26-20.el7_2.x86_64
cyrus-imapd-utils-2.4.17-8.el7_1.x86_64
cyrus-imapd-devel-2.4.17-8.el7_1.x86_64
cyrus-sasl-plain-2.1.26-20.el7_2.x86_64
cyrus-sasl-2.1.26-20.el7_2.x86_64
cyrus-sasl-scram-2.1.26-20.el7_2.x86_64
cyrus-sasl-md5-2.1.26-20.el7_2.x86_64

are not working.