diff --git a/mail/py-spf/Makefile b/mail/py-spf/Makefile
index 9cb479266fa0..911b1cc13204 100644
--- a/mail/py-spf/Makefile
+++ b/mail/py-spf/Makefile
@@ -3,6 +3,7 @@
 
 PORTNAME=	spf
 PORTVERSION=	2.0.8
+PORTREVISION=	1
 CATEGORIES=	mail python
 MASTER_SITES=	SF/pymilter/py${PORTNAME}/py${PORTNAME}-${PORTVERSION}
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -13,8 +14,6 @@ COMMENT=	Python implementation of the RFC 4408 SPF protocol
 
 LICENSE=	PSFL
 
-RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}dns>=0:${PORTSDIR}/dns/py-dns
-
 OPTIONS_DEFINE=	DOCS
 OPTIONSFILE=	${PORT_DBDIR}/py-${PORTNAME}/options
 
@@ -28,10 +27,18 @@ PORTDOCS=	CHANGELOG README
 
 SHEBANG_FILES=	spf.py
 
+.include <bsd.port.pre.mk>
+
+.if ${PYTHON_REL} < 300
+RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}dns>=0:${PORTSDIR}/dns/py-dns
+.else
+RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}dns3>=0:${PORTSDIR}/dns/py-dns3
+.endif
+
 post-install:
 	${CHMOD} ${BINMODE} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/spf.py
 	${LN} -s ${PYTHONPREFIX_SITELIBDIR}/spf.py ${STAGEDIR}${PREFIX}/bin/
 	${MKDIR} ${STAGEDIR}${DOCSDIR}/
 	cd ${WRKSRC}/ && ${INSTALL_DATA} ${PORTDOCS} ${STAGEDIR}${DOCSDIR}/
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>