Resolves: rhbz#1467312
Fixed multiple memory leaks
Resolves: CVE-2017-1000369
Fixed typo causing exim-clamav to create /0750 directory
Resolves: rhbz#1412028
On callout avoid SIZE option when doing recipient verification with
caching enabled
Resolves: rhbz#1482217
Fixed some minor whitespace problems in the spec