diff --git a/.envrc.sample b/.envrc.sample
index 6dd9359..d6d1f8e 100644
--- a/.envrc.sample
+++ b/.envrc.sample
@@ -31,11 +31,12 @@ export SHARED_LISTS_HOST=order.voedselcollectief.org
 export SHARED_LISTS_DB_NAME=sharedlists
 export SHARED_LISTS_USER=biobulkbende
 
-export SMTP_DOMAIN=mail.autonomic.zone
 export SMTP_ADDRESS=foodsoft@biobulkbende.org
-export SMTP_PORT=25
-export SMTP_USER_NAME=foodsoft
+export SMTP_AUTHENTICATION=plain
+export SMTP_DOMAIN=mail.autonomic.zone
 export SMTP_ENABLE_STARTTLS_AUTO=true
+export SMTP_PORT=587
+export SMTP_USER_NAME=foodsoft
 
 export SECRET_DB_PASSWORD_VERSION=v1
 export SECRET_DB_ROOT_PASSWORD_VERSION=v1
diff --git a/compose.yml b/compose.yml
index cc33a5a..6733d7d 100644
--- a/compose.yml
+++ b/compose.yml
@@ -45,6 +45,7 @@ services:
       - REDIS_URL=redis://cache:6379
       - SECRET_KEY_BASE_FILE=/run/secrets/secret_key_base
       - SMTP_ADDRESS
+      - SMTP_AUTHENTICATION
       - SMTP_DOMAIN
       - SMTP_ENABLE_STARTTLS_AUTO
       - SMTP_PASSWORD_FILE=/run/secrets/smtp_password