Description of problem:
SELinux is preventing smtp from 'read' accesses on the lnk_file log.

*****  Plugin catchall (100. confidence) suggests   **************************

If cree que de manera predeterminada, smtp debería permitir acceso read sobre log lnk_file.     
Then debería reportar esto como un error.
Puede generar un módulo de política local para permitir este acceso.
Do
allow this access for now by executing:
# ausearch -c 'smtp' --raw | audit2allow -M my-smtp
# semodule -X 300 -i my-smtp.pp

Additional Information:
Source Context                system_u:system_r:postfix_smtp_t:s0
Target Context                system_u:object_r:tmpfs_t:s0
Target Objects                log [ lnk_file ]
Source                        smtp
Source Path                   smtp
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-219.fc25.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.8.1-1.fc25.x86_64 #1 SMP Fri Oct
                              7 14:38:22 UTC 2016 x86_64 x86_64
Alert Count                   672
First Seen                    2016-10-13 19:54:23 CEST
Last Seen                     2016-10-19 22:46:09 CEST
Local ID                      e6adef55-a258-4a0d-92e6-e4d77021e89d

Raw Audit Messages
type=AVC msg=audit(1476909969.226:530): avc:  denied  { read } for  pid=17557 comm="smtp" name="log" dev="tmpfs" ino=24547 scontext=system_u:system_r:postfix_smtp_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0


Hash: smtp,postfix_smtp_t,tmpfs_t,lnk_file,read

Version-Release number of selected component:
selinux-policy-3.13.1-219.fc25.noarch

Additional info:
reporter:       libreport-2.8.0
hashmarkername: setroubleshoot
kernel:         4.8.1-1.fc25.x86_64
type:           libreport