diff --git a/mail/dma/Makefile b/mail/dma/Makefile
index cb5d91e5942c..9a497a47bb0c 100644
--- a/mail/dma/Makefile
+++ b/mail/dma/Makefile
@@ -1,53 +1,55 @@
 # Created by: Daniel Roethlisberger <daniel@roe.ch>
 
 PORTNAME=	dma
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.13.20210614
 PORTEPOCH=	1
 CATEGORIES=	mail
 
 MAINTAINER=	garga@FreeBSD.org
 COMMENT=	DragonFly Mail Agent, a small MTA for local/outbound mail
 
 LICENSE=	BSD3CLAUSE
 
 USES=		ssl uidfix
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	corecode
 GH_TAGNAME=	430f3b59074d6303ce3eb4d9fcf16dcf3538ba31
 USE_RC_SUBR=	dma_flushq
 
 MAKE_ENV=	__MAKE_CONF=/dev/null \
 		MANDIR=${PREFIX}/share/man/man \
 		MK_WERROR=no \
 		SRCCONF=/dev/null
 
 CFLAGS+=	-DCONF_PATH='\"${PREFIX}/etc/dma\"' -DDMA_GROUP='\"mail\"' \
 		-DDMA_ROOT_USER='\"mailnull\"' -I${OPENSSLINC}
 LDFLAGS+=	-L${OPENSSLLIB}
 
 PORTSCOUT=	limit:^[0-9\.]*$$
-SUB_FILES=	pkg-message
+SUB_FILES=	dma_cron pkg-message
 
 BUILD_WRKSRC=	${WRKSRC}/bsd
 INSTALL_WRKSRC=	${WRKSRC}/bsd
 
 post-patch:
 	@${REINPLACE_CMD} -e 's,/etc/dma,${PREFIX}/etc/dma,g' \
 		${WRKSRC}/dma.8
 	@${REINPLACE_CMD} -e 's, /etc/dma, ${PREFIX}/etc/dma,g' \
 		${WRKSRC}/dma.conf
 	@${REINPLACE_CMD} -e '/^MK_MAN/d' \
 		-e 's/^NOMAN.*/MAN=/' \
 		${WRKSRC}/bsd/dma-mbox-create/Makefile
 
 post-install:
-	${MKDIR} ${STAGEDIR}${ETCDIR}
+	${MKDIR} ${STAGEDIR}${ETCDIR}/cron.d
 	${MKDIR} ${STAGEDIR}/var/spool/dma
 	${INSTALL_DATA} ${WRKSRC}/dma.conf \
 		${STAGEDIR}${ETCDIR}/dma.conf.sample
 	${INSTALL_DATA} ${WRKSRC}/auth.conf \
 		${STAGEDIR}${ETCDIR}/auth.conf.sample
+	${INSTALL_DATA} ${WRKDIR}/dma_cron \
+		${STAGEDIR}${ETCDIR}/cron.d/dma
 
 .include <bsd.port.mk>
diff --git a/mail/dma/files/dma_cron.in b/mail/dma/files/dma_cron.in
new file mode 100644
index 000000000000..43516fc904d8
--- /dev/null
+++ b/mail/dma/files/dma_cron.in
@@ -0,0 +1,5 @@
+SHELL=/bin/sh
+PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin
+
+# See crontab(5) for field format.
+*/30 * * * * root %%PREFIX%%/libexec/dma -q
diff --git a/mail/dma/files/pkg-message.in b/mail/dma/files/pkg-message.in
index fcc59f37b315..56989bd39f2b 100644
--- a/mail/dma/files/pkg-message.in
+++ b/mail/dma/files/pkg-message.in
@@ -1,50 +1,48 @@
 [
 { type: install
   message: <<EOM
 
 Please note that dma is now also available in FreeBSD's base, currently under 
 /usr/libexec/dma, and with config files in /etc/mail/dma.
 
 These may not track the same version of dma.  Users are encouraged to check
 releases notes to see which best suits their needs.
 
 ===
 
 To enable dma please edit /etc/mail/mailer.conf to replace all lines
 referring to another MTA with the following:
 
 sendmail	%%PREFIX%%/libexec/dma
 send-mail	%%PREFIX%%/libexec/dma
 mailq		%%PREFIX%%/libexec/dma
 
 If you do not need sendmail anymore, please add in your rc.conf:
 
 sendmail_enable="NONE"
 
 or, for more granular control:
 
 sendmail_enable="NO"
 sendmail_submit_enable="NO"
 sendmail_outbound_enable="NO"
 sendmail_msp_queue_enable="NO"
 
 if you want anything in your queue to be flushed at on boot or before
 shutdown, add the following to rc.conf as well:
 
 dma_flushq_enable="YES"
 
-you can also add a cronjob to do regular mailq flushes using the following
-command:
-
-%%PREFIX%%/libexec/dma -q
+A crontab configuration to flush every 30 minutes was added to
+%%PREFIX%%/etc/cron.d/dma.
 
 And you can disable some sendmail specific daily maintenance routines in your
 /etc/periodic.conf file:
 
 daily_clean_hoststat_enable="NO"
 daily_status_mail_rejects_enable="NO"
 daily_status_include_submit_mailq="NO"
 daily_submit_queuerun="NO"
 EOM
 }
 ]
diff --git a/mail/dma/pkg-plist b/mail/dma/pkg-plist
index 2e01fb01bc70..0f3dd105a0c8 100644
--- a/mail/dma/pkg-plist
+++ b/mail/dma/pkg-plist
@@ -1,5 +1,6 @@
+%%ETCDIR%%/cron.d/dma
 @(root,mail,2555) libexec/dma
 @(root,mail,4554) libexec/dma-mbox-create
 @sample(root,mail,0644) etc/dma/dma.conf.sample
 @sample(root,mail,0640) etc/dma/auth.conf.sample
 share/man/man8/dma.8.gz