Oracle Cloud Infrastructure Documentation

Configure SMTP Connection

Set up and test your SMTP connection using an SMTP library or product, such as Postfix or Sendmail, to send email through Oracle Cloud Infrastructure Email Delivery.

To access SMTP sending information to configure the connection in your system, open the navigation menu. Under Solutions and Platform, go to Email Delivery and click Email Configuration. The following information is displayed:

  • Public Endpoint: The public endpoint used to send email to for this region.
  • SMTP Ports: The SMTP ports used to accept email. Email Delivery supports TLS on port 25 or 587.
  • Security: This field indicates if TLS, the standard means of performing encryption in transit for email, is being used. Customers must encrypt email while it is in transit to the Oracle Cloud Infrastructure Email Delivery service. Encrypted emails are protected from being read during transit.
    Important

    Java applications (including JavaMail) must be updated to the latest version to ensure the latest protocols, ciphers, and security patches are in compliance with Oracle's supported security policies and ciphers.

SMTP Connection Endpoints

Use the following regional endpoints for establishing SMTP connections for sending.

  • YNY: smtp.email.ap-chuncheon-1.oci.oraclecloud.com
  • HYD: smtp.email.ap-hyderabad-1.oci.oraclecloud.com
  • MEL: smtp.email.ap-melbourne-1.oci.oraclecloud.com
  • BOM: smtp.email.ap-mumbai-1.oci.oraclecloud.com
  • KIX: smtp.email.ap-osaka-1.oci.oraclecloud.com
  • ICN: smtp.email.ap-seoul-1.oci.oraclecloud.com
  • SYD: smtp.email.ap-sydney-1.oci.oraclecloud.com
  • NRT: smtp.email.ap-tokyo-1.oci.oraclecloud.com
  • YUL: smtp.email.ca-montreal-1.oci.oraclecloud.com
  • YYZ: smtp.email.ca-toronto-1.oci.oraclecloud.com
  • AMS: smtp.email.eu-amsterdam-1.oci.oraclecloud.com
  • FRA: smtp.email.eu-frankfurt-1.oci.oraclecloud.com
  • ZRH: smtp.email.eu-zurich-1.oci.oraclecloud.com
  • DXB: smtp.email.me-dubai-1.oci.oraclecloud.com
  • JED: smtp.email.me-jeddah-1.oci.oraclecloud.com
  • SCL: smtp.email.sa-santiago-1.oci.oraclecloud.com
  • GRU: smtp.email.sa-saopaulo-1.oci.oraclecloud.com
  • CWL: smtp.email.uk-cardiff-1.oci.oraclecloud.com
  • LHR: smtp.email.uk-london-1.oci.oraclecloud.com
  • IAD: smtp.email.us-ashburn-1.oci.oraclecloud.com
  • PHX: smtp.email.us-phoenix-1.oci.oraclecloud.com
  • SJC: smtp.email.us-sanjose-1.oci.oraclecloud.com

TLS Requirements

Oracle maintains strict security policies and only accepts email traffic using Transport Layer Security (TLS). Use of TLS 1.2 is mandatory to send email using Oracle Cloud Infrastructure.

The approved TLS 1.2 ciphers are:

  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
  • TLS_DHE_DSS_WITH_AES_256_CBC_SHA256
  • TLS_RSA_WITH_AES_256_CBC_SHA
  • TLS_RSA_WITH_AES_256_CBC_SHA256
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA
  • TLS_DHE_DSS_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
  • TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
  • TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256