diff --git a/nextcloud/docker-compose.smtp.yml b/nextcloud/docker-compose.smtp.yml
index 60136d8..6a2be09 100644
--- a/nextcloud/docker-compose.smtp.yml
+++ b/nextcloud/docker-compose.smtp.yml
@@ -7,11 +7,19 @@ services:
       NC_mail_smtphost: ${NC_mail_smtphost:?err} # The hostname of the SMTP server.
       NC_mail_smtpsecure: ${NC_mail_smtpsecure:-ssl} # Set to ssl to use SSL, or tls to use STARTTLS.
       NC_mail_smtpport: ${NC_mail_smtpport:-465}
+      NC_mail_smtp: ${NC_mail_smtpauth}
       NC_mail_smtpauthtype: ${NC_mail_smtpauthtype:-LOGIN}
       NC_mail_smtpname: ${NC_mail_smtpname:?err}
       NC_mail_smtppassword: ${NC_mail_smtppassword:?err}
       NC_mail_from_address: ${NC_mail_from_address:?err}
       NC_mail_domain: ${NC_mail_domain:?err}
+      SMTP_HOST: ${NC_mail_smtphost:?err}
+      SMTP_SECURE: ${NC_mail_smtpsecure:-ssl}
+      SMTP_AUTHTYPE: ${NC_mail_smtpauthtype:-LOGIN}
+      SMTP_NAME: ${NC_mail_smtpname:?err}
+      SMTP_PASSWORD: ${NC_mail_smtppassword:?err}
+      MAIL_FROM_ADDRESS: ${NC_mail_from_address:?err}
+      MAIL_DOMAIN: ${NC_mail_domain:?err}
 
   nextcloud-cron:
     environment: