diff --git a/postfix.spec b/postfix.spec
index e07d628a11c66c131d0a7d1a96202a757413b4fa..3ae97e0f7a4bd9eddb9a85e49eaf5d60ebebd767 100644
--- a/postfix.spec
+++ b/postfix.spec
@@ -23,7 +23,7 @@
 Name:           postfix
 Summary:        Postfix Mail Transport Agent
 Version:        3.7.2
-Release:        2
+Release:        3
 Epoch:          2
 URL:            http://www.postfix.org
 License:        (IPL-1.0 and GPLv2+) or (EPL-2.0 and GPLv2+)
@@ -58,6 +58,7 @@ Requires: diffutils findutils
 Provides:       MTA smtpd smtpdaemon server(smtp)
 Provides:       %{name}-mysql %{name}-sqlite %{name}-ldap %{name}-pcre
 Obsoletes:      %{name}-mysql %{name}-sqlite %{name}-ldap %{name}-pcre
+Conflicts:	sendmail
 
 %description
 Postfix is a Mail Transport Agent (MTA).
@@ -551,6 +552,9 @@ fi
 %{postfix_doc_dir}/README_FILES/*
 
 %changelog
+* Mon Sep 19 2022 yangchenguang <yangchenguang@uniontech.com> - 2:3.7.2-3
+- fix postfix conflicts sendmail server start error
+
 * Tue Sep 13 2022 xingwei <xingwei14@h-partners.com> - 2:3.7.2-2
 - Type:bugfix
 - ID:NA