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Description of problem:
Current postfix doesn't build with kernel-4*

Version-Release number of selected component (if applicable):
postfix-2.10.1-6.el7_5

How reproducible:
Always

Steps to Reproduce:
1. Try to rebuild with kernel-4
2.
3.

Actual results:
Build failure

Expected results:
No build failure

Additional info:
This is blocker, because postfix cannot be rebuild for RHEL-7.6 - e.g. aarch64 has kernel-4.5.0-15.4.2.el7.aarch64.

Created attachment 1432653 [details]
Backported fix

VERIFIED by reviewing Brew buildroot: aarch64 package has been built on rhel-7.6-build-3956943-2483790 which contains kernel-4.5.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:3085