diff --git a/sendmail.spec b/sendmail.spec
index dc1b3f7..6d17066 100644
--- a/sendmail.spec
+++ b/sendmail.spec
@@ -29,7 +29,7 @@
 Summary: A widely used Mail Transport Agent (MTA)
 Name: sendmail
 Version: 8.17.1
-Release: 3%{?dist}
+Release: 4%{?dist}
 License: Sendmail
 URL: http://www.sendmail.org/
 
@@ -213,14 +213,15 @@ done
 sed -i 's|/usr/local/bin/perl|%{_bindir}/perl|' contrib/*.pl
 
 %build
+%set_build_flags
 # generate redhat config file
 cat > redhat.config.m4 << EOF
 define(\`confMAPDEF', \`-DNEWDB -DCDB %{?nis_cflags} -DMAP_REGEX -DSOCKETMAP -DNAMED_BIND=1')
-define(\`confOPTIMIZE', \`\`\`\`${RPM_OPT_FLAGS}'''')
+define(\`confOPTIMIZE', \`\`\`\`${CFLAGS}'''')
 define(\`confENVDEF', \`-I%{_includedir}/libdb -I%{_prefix}/kerberos/include -Wall -DXDEBUG=0 -DNETINET6 -DHES_GETMAILHOST -DUSE_VENDOR_CF_PATH=1 -D_FFR_LINUX_MHNL -D_FFR_QOS -D_FILE_OFFSET_BITS=64 -DHAS_GETHOSTBYNAME2 -DHASFLOCK')
 define(\`confLIBDIRS', \`-L%{_prefix}/kerberos/%{_lib}')
 define(\`confLIBS', \`%{?nis_ldadd} -lcrypt -ldb -lcdb -lresolv')
-%{?_hardened_build:define(\`confLDOPTS', \`-Xlinker -z -Xlinker relro -Xlinker -z -Xlinker now')}
+%{?_hardened_build:define(\`confLDOPTS', \`${LDFLAGS}')}
 define(\`confMANOWN', \`root')
 define(\`confMANGRP', \`root')
 define(\`confMANMODE', \`644')
@@ -230,7 +231,7 @@ define(\`confMAN8SRC', \`8')
 define(\`confSTDIR', \`%{stdir}')
 define(\`STATUS_FILE', \`%{stdir}/statistics')
 define(\`confLIBSEARCH', \`db resolv 44bsd')
-define(\`confCC', \`%{__cc}')
+define(\`confCC', \`${CC}')
 EOF
 #'
 
@@ -707,6 +708,9 @@ exit 0
 
 
 %changelog
+* Fri Nov 19 2021 Timm Bäder <tbaeder@redhat.com> - 8.17.1-4
+- Use %%set_build_flags and pass  all LDFLAGS to the build
+
 * Fri Nov 12 2021 Björn Esser <besser82@fedoraproject.org> - 8.17.1-3
 - Rebuild(libnsl2)