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

[Simon Matter]

> 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

AFAIK those messages are normal and don't show any real problem. What
exactly does not work?

Regards,
Simon

>
>
>
> 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.
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