diff --git a/sendmail-8.16.1-openssl-3.0-fix.patch b/sendmail-8.16.1-openssl-3.0-fix.patch
new file mode 100644
index 0000000..aae7926
--- /dev/null
+++ b/sendmail-8.16.1-openssl-3.0-fix.patch
@@ -0,0 +1,19 @@
+diff --git a/sendmail/tls.c b/sendmail/tls.c
+index 696d32f..b8527c4 100644
+--- a/sendmail/tls.c
++++ b/sendmail/tls.c
+@@ -29,7 +29,13 @@ SM_RCSID("@(#)$Id: tls.c,v 8.127 2013-11-27 02:51:11 gshapiro Exp $")
+ # ERROR: OpenSSL version OPENSSL_VERSION_NUMBER is unsupported.
+ # endif
+ 
+-# if OPENSSL_VERSION_NUMBER >= 0x10100000L && OPENSSL_VERSION_NUMBER < 0x20000000L
++/*
++ **  *SSL version numbers:
++ **  OpenSSL 0.9 - 1.1 (so far), 3.0 (in alpha)
++ **  LibreSSL 2.0 (0x20000000L - part of "These will never change")
++ */
++
++# if (OPENSSL_VERSION_NUMBER >= 0x10100000L && OPENSSL_VERSION_NUMBER < 0x20000000L) || OPENSSL_VERSION_NUMBER >= 0x30000000L
+ #  define MTA_HAVE_DH_set0_pqg 1
+ #  define MTA_HAVE_DSA_GENERATE_EX	1
+ 
diff --git a/sendmail.spec b/sendmail.spec
index c63e5b8..e9212a3 100644
--- a/sendmail.spec
+++ b/sendmail.spec
@@ -29,7 +29,7 @@
 Summary: A widely used Mail Transport Agent (MTA)
 Name: sendmail
 Version: 8.16.1
-Release: 7%{?dist}
+Release: 8%{?dist}
 License: Sendmail
 URL: http://www.sendmail.org/
 
@@ -94,6 +94,7 @@ Patch23: sendmail-8.16.1-sasl2-in-etc.patch
 # upstream reserved option ID 0xe7 for testing of this new feature, #576643
 Patch25: sendmail-8.16.1-qos.patch
 Patch26: sendmail-8.16.1-libmilter-socket-activation.patch
+Patch27: sendmail-8.16.1-openssl-3.0-fix.patch
 
 BuildRequires: make
 BuildRequires: libdb-devel
@@ -204,6 +205,7 @@ cp devtools/M4/UNIX/{,shared}library.m4
 %patch23 -p1 -b .sasl2-in-etc
 %patch25 -p1 -b .qos
 %patch26 -p1 -b .libmilter-socket-activation
+%patch27 -p1 -b .openssl-3.0-fix
 
 for f in RELEASE_NOTES contrib/etrn.0; do
 	iconv -f iso8859-1 -t utf8 -o ${f}{_,} &&
@@ -707,6 +709,10 @@ exit 0
 
 
 %changelog
+* Fri May  7 2021 Jaroslav Škarvada <jskarvad@redhat.com> - 8.16.1-8
+- Added support for openssl-3.0
+  Resolves: rhbz#1953504
+
 * Fri Apr 16 2021 Mohan Boddu <mboddu@redhat.com> - 8.16.1-7
 - Rebuilt for RHEL 9 BETA on Apr 15th 2021. Related: rhbz#1947937