Description of problem:
install sendmail 
start sendmail
the alert comes
SELinux is preventing sendmail from 'read' accesses on the file mail.

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

If you believe that sendmail should be allowed read access on the mail file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep sendmail /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:system_mail_t:s0
Target Context                system_u:object_r:root_t:s0
Target Objects                mail [ file ]
Source                        sendmail
Source Path                   sendmail
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-105.11.fc21.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.19.3-200.fc21.x86_64 #1 SMP Thu
                              Mar 26 21:39:42 UTC 2015 x86_64 x86_64
Alert Count                   1319
First Seen                    2015-04-23 15:06:54 BST
Last Seen                     2015-04-24 14:47:50 BST
Local ID                      2482918c-67ce-4544-8fe1-dae9f045ed1e

Raw Audit Messages
type=AVC msg=audit(1429883270.218:725): avc:  denied  { read } for  pid=4610 comm="sendmail" name="mail" dev="dm-0" ino=3810839 scontext=system_u:system_r:system_mail_t:s0 tcontext=system_u:object_r:root_t:s0 tclass=file permissive=0


Hash: sendmail,system_mail_t,root_t,file,read

Version-Release number of selected component:
selinux-policy-3.13.1-105.11.fc21.noarch

Additional info:
reporter:       libreport-2.3.0
hashmarkername: setroubleshoot
kernel:         3.19.3-200.fc21.x86_64
type:           libreport