diff --git a/python-dnspython.spec b/python-dnspython.spec
index 4b1af40..392df0f 100644
--- a/python-dnspython.spec
+++ b/python-dnspython.spec
@@ -1,6 +1,6 @@
 Name:          python-dnspython
 Version:       2.1.0
-Release:       2mamba
+Release:       3mamba
 Summary:       A DNS toolkit for Python
 Group:         System/Libraries
 Vendor:        openmamba
@@ -17,9 +17,6 @@ BuildRequires: libpython3-devel
 %{summary}.
 
 %if 0%{?with_pyver}
-%py_requires_append \
-Provides:      dnspython
-Obsoletes:     dnspython <= 1.10.0
 %pyver_package
 %endif
 
@@ -47,6 +44,9 @@ sed -i "\,\.egg-info/,d;s,.*/man/.*,&.gz," %{name}.filelist
 %doc LICENSE
 
 %changelog
+* Sun Nov 28 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 2.1.0-3mamba
+- remove obsolete for dnspython in favour of legacy package python-dnspython-py27 for mailman 2
+
 * Mon Apr 05 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 2.1.0-2mamba
 - obsolete dnspython