diff --git a/sendmail.spec b/sendmail.spec
index 8ef6bc1..478a857 100644
--- a/sendmail.spec
+++ b/sendmail.spec
@@ -19,7 +19,7 @@
 Summary: A widely used Mail Transport Agent (MTA)
 Name: sendmail
 Version: 8.16.1
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: Sendmail
 URL: http://www.sendmail.org/
 
@@ -87,6 +87,7 @@ Patch26: sendmail-8.16.1-libmilter-socket-activation.patch
 
 BuildRequires: libdb-devel
 BuildRequires: libnsl2-devel
+BuildRequires: tinycdb-devel
 BuildRequires: groff
 BuildRequires: ghostscript
 BuildRequires: m4
@@ -201,11 +202,11 @@ sed -i 's|/usr/local/bin/perl|%{_bindir}/perl|' contrib/*.pl
 %build
 # generate redhat config file
 cat > redhat.config.m4 << EOF
-define(\`confMAPDEF', \`-DNEWDB -DNIS -DMAP_REGEX -DSOCKETMAP -DNAMED_BIND=1')
+define(\`confMAPDEF', \`-DNEWDB -DCDB -DNIS -DMAP_REGEX -DSOCKETMAP -DNAMED_BIND=1')
 define(\`confOPTIMIZE', \`\`\`\`${RPM_OPT_FLAGS}'''')
 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')
 define(\`confLIBDIRS', \`-L%{_prefix}/kerberos/%{_lib}')
-define(\`confLIBS', \`-lnsl -lcrypt -ldb -lresolv')
+define(\`confLIBS', \`-lnsl -lcrypt -ldb -lcdb -lresolv')
 %{?_hardened_build:define(\`confLDOPTS', \`-Xlinker -z -Xlinker relro -Xlinker -z -Xlinker now')}
 define(\`confMANOWN', \`root')
 define(\`confMANGRP', \`root')
@@ -693,6 +694,10 @@ exit 0
 
 
 %changelog
+* Wed Dec  2 2020 Jaroslav Škarvada <jskarvad@redhat.com> - 8.16.1-3
+- Enabled CDB map support
+  Related: rhbz#1781181
+
 * Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 8.16.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild