I tried this answer (https://serverfault.com/a/744756/123651) but it still gives an error.
Jan 7 23:56:33 ip-172-31-15-65 opendkim[24223]: AF15521407: dkim_eoh(): resource unavailable: can't create temporary file at /var/tmp/dkim.AF15521407.ennuJK: Permission denied
Here are some of the audit.log
type=AVC msg=audit(1483827348.024:363280): avc: denied { write } for pid=22334 comm="opendkim" name="tmp" dev=xvde ino=40961 scontext=unconfined_u:system_r:dkim_milter_t:s0 tcontext=system_u:object_r:tmp_t:s0 tclass=dirtype=SYSCALL msg=audit(1483827348.024:363280): arch=c000003e syscall=2 success=no exit=-13 a0=7f7eecd1f910 a1=c2 a2=180 a3=0 items=0 ppid=22035 pid=22334 auid=0 uid=495 gid=495 euid=495 suid=495 fsuid=495 egid=495 sgid=495 fsgid=495 tty=(none) ses=4038 comm="opendkim" exe="/usr/sbin/opendkim" subj=unconfined_u:system_r:dkim_milter_t:s0 key=(null)# cat opendkim.temodule opendkim 1.0;require { type tmp_t; type dkim_milter_t; class dir write;}#============= dkim_milter_t ==============#!!!! The source type 'dkim_milter_t' can write to a 'dir' of the following types:# dkim_milter_data_t, cluster_var_lib_t, cluster_var_run_t, root_t, cluster_conf_tallow dkim_milter_t tmp_t:dir write;# semodule -i opendkim.pp# ls -ldZ /var/tmpdrwxrwxrwt. root root system_u:object_r:tmp_t:s0 /var/tmp# service opendkim restartStopping OpenDKIM Milter: [ OK ]Starting OpenDKIM Milter: [ OK ]I don't know what else to try.
Reference: I used this guide: https://www.rosehosting.com/blog/how-to-install-and-integrate-opendkim-with-postfix-on-a-centos-6-vps/
CentOS release 6.8 (Final)
