diff --git a/Dockerfile b/Dockerfile
index 91483e6f..5743d79e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -103,6 +103,7 @@ RUN sed -i 's/START_DAEMON=no/START_DAEMON=yes/g' /etc/default/fetchmail
 # Configures Postfix
 COPY target/postfix/main.cf target/postfix/master.cf /etc/postfix/
 RUN echo "" > /etc/aliases
+RUN openssl dhparam -out /etc/postfix/dhparams.pem 2048
 
 # Configuring Logs
 RUN sed -i -r "/^#?compress/c\compress\ncopytruncate" /etc/logrotate.conf && \
diff --git a/target/postfix/main.cf b/target/postfix/main.cf
index c94b093b..0a79adc7 100644
--- a/target/postfix/main.cf
+++ b/target/postfix/main.cf
@@ -6,11 +6,11 @@ append_dot_mydomain = no
 readme_directory = no
 
 # Basic configuration
-# myhostname = 
+# myhostname =
 alias_maps = texthash:/etc/aliases
 alias_database = texthash:/etc/aliases
-mydestination = 
-relayhost = 
+mydestination =
+relayhost =
 mynetworks = 127.0.0.0/8 [::1]/128 [fe80::]/64
 mailbox_size_limit = 0
 recipient_delimiter = +
@@ -33,6 +33,7 @@ smtp_tls_protocols=!SSLv2,!SSLv3
 smtpd_tls_mandatory_ciphers = high
 smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3
 smtpd_tls_exclude_ciphers = aNULL, LOW, EXP, MEDIUM, ADH, AECDH, MD5, DSS, ECDSA, CAMELLIA128, 3DES, CAMELLIA256, RSA+AES, eNULL
+smtpd_tls_dh1024_param_file = /etc/postfix/dhparams.pem
 smtpd_tls_CApath = /etc/ssl/certs
 smtp_tls_CApath = /etc/ssl/certs