diff --git a/mail/isync/Makefile b/mail/isync/Makefile
index 2bc408fa5f33..9de86aec08f2 100644
--- a/mail/isync/Makefile
+++ b/mail/isync/Makefile
@@ -1,35 +1,36 @@
 PORTNAME=	isync
 PORTVERSION=	1.4.4
+PORTREVISION=	1
 CATEGORIES=	mail
 MASTER_SITES=	SF
 
 MAINTAINER=	ehaupt@FreeBSD.org
 COMMENT=	Maintain local copies of remote IMAP folders w/synchronized flags
 WWW=		http://isync.sourceforge.net/
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	libsasl2.so:security/cyrus-sasl2
 
 USES=		alias bdb compiler:c11 cpe perl5 ssl
 CPE_VENDOR=	isync_project
 USE_PERL5=	build
 
 GNU_CONFIGURE=	yes
 
 CONFIGURE_ARGS=	--with-sasl=${LOCALBASE} \
 		--with-ssl=${OPENSSLLIB:H}
 
 MAKE_ARGS+=	SSL_LIBS="-L${OPENSSLLIB} -lssl -lcrypto"
 
 CPPFLAGS+=	-I${BDB_INCLUDE_DIR}
 LDFLAGS+=	-L${BDB_LIB_DIR}
 
 post-patch:
 	@${REINPLACE_CMD} -e 's|: install-docDATA|:|g' ${WRKSRC}/Makefile.in
 	@${REINPLACE_CMD} -e 's|\$$(docdir)/examples|\$$(sysconfdir)|g' \
 	    ${WRKSRC}/src/Makefile.in
 	@${REINPLACE_CMD} -e 's|-Wformat-signedness||g' ${WRKSRC}/${CONFIGURE_SCRIPT}
 
 .include <bsd.port.mk>
diff --git a/mail/isync/files/patch-src_drv__imap.c b/mail/isync/files/patch-src_drv__imap.c
new file mode 100644
index 000000000000..bd3e044136a8
--- /dev/null
+++ b/mail/isync/files/patch-src_drv__imap.c
@@ -0,0 +1,25 @@
+--- src/drv_imap.c.orig	2021-12-03 10:56:16 UTC
++++ src/drv_imap.c
+@@ -1620,6 +1620,7 @@ imap_socket_read( void *aux )
+ 					error( "IMAP error: unexpected BYE response: %s\n", cmd );
+ 					/* We just wait for the server to close the connection now. */
+ 					ctx->expectEOF = 1;
++					socket_expect_eof( &ctx->conn );
+ 				} else {
+ 					/* We still need to wait for the LOGOUT's tagged OK. */
+ 				}
+@@ -1882,10 +1883,12 @@ imap_cleanup_p2( imap_store_t *ctx,
+ imap_cleanup_p2( imap_store_t *ctx,
+                  imap_cmd_t *cmd ATTR_UNUSED, int response )
+ {
+-	if (response == RESP_NO)
++	if (response == RESP_NO) {
+ 		imap_cancel_store( &ctx->gen );
+-	else if (response == RESP_OK)
++	} else if (response == RESP_OK) {
+ 		ctx->expectEOF = 1;
++		socket_expect_eof( &ctx->conn );
++	}
+ }
+ 
+ /******************* imap_open_store *******************/
diff --git a/mail/isync/files/patch-src_socket.c b/mail/isync/files/patch-src_socket.c
new file mode 100644
index 000000000000..61b4a1872c87
--- /dev/null
+++ b/mail/isync/files/patch-src_socket.c
@@ -0,0 +1,18 @@
+--- src/socket.c.orig	2021-12-03 10:56:16 UTC
++++ src/socket.c
+@@ -810,6 +810,15 @@ socket_expect_activity( conn_t *conn, int expect )
+ 		conf_wakeup( &conn->fd_timeout, expect ? conn->conf->timeout : -1 );
+ }
+ 
++void
++socket_expect_eof( conn_t *sock )
++{
++#ifdef SSL_OP_IGNORE_UNEXPECTED_EOF  // implies HAVE_LIBSSL
++	if (sock->ssl)
++		SSL_set_options( sock->ssl, SSL_OP_IGNORE_UNEXPECTED_EOF );
++#endif
++}
++
+ int
+ socket_read( conn_t *conn, char *buf, uint len )
+ {
diff --git a/mail/isync/files/patch-src_socket.h b/mail/isync/files/patch-src_socket.h
new file mode 100644
index 000000000000..986b52657e8e
--- /dev/null
+++ b/mail/isync/files/patch-src_socket.h
@@ -0,0 +1,10 @@
+--- src/socket.h.orig	2021-12-03 10:56:16 UTC
++++ src/socket.h
+@@ -142,6 +142,7 @@ void socket_expect_activity( conn_t *sock, int expect 
+ void socket_start_deflate( conn_t *conn );
+ void socket_close( conn_t *sock );
+ void socket_expect_activity( conn_t *sock, int expect );
++void socket_expect_eof( conn_t *sock );
+ int socket_read( conn_t *sock, char *buf, uint len ); /* never waits */
+ char *socket_read_line( conn_t *sock ); /* don't free return value; never waits */
+ typedef enum { KeepOwn = 0, GiveOwn } ownership_t;