diff --git a/Dockerfile b/Dockerfile
index 9c3db02..94a8613 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,7 @@ RUN mkdir /etc/dovecot/sieve-after/
 RUN addgroup vmail
 RUN adduser -h /var/lib/vmail -D -G vmail vmail
 
-EXPOSE 6334 7777 
+EXPOSE 143 6334 7777 
 
 VOLUME /var/lib/vmail/mail/ /etc/ssl/mail