diff --git a/Dockerfile b/Dockerfile
index 4c06540..803b326 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,10 +5,11 @@ FROM debian:stretch-slim
 
 RUN apt-get update \
 	&& apt-get install sendmail sasl2-bin milter-greylist -yyq \
+	&& sed -ie 's/mech_list: EXTERNAL DIGEST-MD5 CRAM-MD5/mech_list:/' /etc/mail/sasl/Sendmail.conf.2 \
 	&& cd /etc/mail && make clean \
 	&& rm -rf /var/lib/apt/lists/* /tmp/*
 
-RUN useradd -rc "HUB Mail Relay" -M relay -NG mail -s /sbin/nologin && echo relay:SmTpR3l@Y | chpasswd
+RUN useradd -rc "HUB Mail Relay" -M relay -NG mail -s /sbin/nologin && echo relay:SmTpR3l2Y | chpasswd
 
 EXPOSE 25