SMTP Settings and Macros

5. SMTP Settings

The detailed configuration tab for email-based verifications is divided into 7 thematic sub-tabs:

• To: A list of target recipient email addresses.
• From: A list of sender accounts.
• Subject: A list of email subject lines.
• Body: The text block containing the email body.
• SMTP Servers: A preset table for domains configured with the following columns: Domain, Protocol, Server Host, Port, SSL, START TLS.
• SMTP Commands: A step-by-step transaction execution script with macro support. Example of an executable script:

    EHLO [{%PROXY_HOST%}]
    {%IFSET:STARTTLS%}STARTTLS{%ENDIFSET%}
    {%IFSET:STARTTLS%}EHLO [{%PROXY_HOST%}]{%ENDIFSET%}
    AUTH LOGIN
    {%BASE64_BEGIN%}{%FROM_EMAIL%}{%BASE64_END%}
    {%BASE64_BEGIN%}{%FROM_PASS%}{%BASE64_END%}
    MAIL FROM:<{%FROM_EMAIL%}>
    RCPT TO:<{%TO_EMAIL%}>
    DATA
    MIME-Version: 1.0
    Date: {%EMAIL_DATE%}
    To: {%TO_EMAIL%}
    From: {%FROM_EMAIL%}
    Subject: {%SUBJECT%}

    {%BODY%}
    .
    RSET
    QUIT

• Filters: Advanced evaluation rules for mail service responses:

  1. By Greeting: Check fails if greeting matches, Check fails if greeting does not match, Check succeeded if greeting matches.
  2. By Command Responses: Rule sets for Check fails if SMTP response matches / does not match and Check succeeded if SMTP response matches.

  Logic Example: Mapping the RCPT command and the mailbox unavailable regular expression to a Check succeeded rule ensures that a functional proxy server is not falsely rejected when encountering a non-existent recipient mailbox.

Reference Guide for Supported Macros: {% ... %}

The following macros can be used within the text input fields of the To, From, Subject, Body, and SMTP Commands sub-tabs: