HM - SMTP Health Monitor

The SMTP (Simple Mail Transfer Protocol) health monitor is used to monitor SMTP services. It can be configured to send mail to multiple recipients.

The SMTP monitor marks the server up on successful transfer and down in case of failure. A basic SMTP health monitor checks if the server is up or down by sending ELHO NOOP QUIT commands.

Configuring SMTP Specific Monitor

The following table lists the input fields needed for configuring SMTP specific monitor:

Field	Description	Optional / Mandatory
Sender ID	Sender Mail ID.	Optional.
Recipients ID	Multiple recipients mail IDs.	Optional.
Mail data	Mail data which need to be sent.	Optional.
Domain Name	Sender mail domain name.	Optional.
Username	Sender username (present under general health monitor configuration under authentication).	Optional.
Password	Sender password (present under general health monitor configuration under authentication).	Optional.
SSL Attributes	Required for SMTPS (secure SMTP) monitor.	Mandatory for SMTPS (SSL Profile Attribute).

Note:

Currently the SMTP monitor can be configured only using the CLI.

Configuring Basic SMTP Health Monitor from CLI

This example lists the mailboxes present, by sending the LIST command after CAPA and user authentication.

[admin:avi-controller]: > configure healthmonitor example-basic-smtp-hm
[admin:avi-controller]: healthmonitor> type health_monitor_smtp
[admin:avi-controller]: healthmonitor> save

Configuring SMTPS Health Monitor from CLI

The SMTP health monitor checks if the server is up or down by sending complete mail over secure channel.

[admin:avi-controller]: > configure healthmonitor example-smtps-hm
[admin:avi-controller]: healthmonitor> type health_monitor_smtps
[admin:avi-controller]: healthmonitor> smtps_monitor
[admin:avi-controller]: healthmonitor:smtps_monitor> sender_id xyz
[admin:avi-controller]: healthmonitor:smtps_monitor> recipients_ids user1
[admin:avi-controller]: healthmonitor:smtps_monitor> recipients_ids user2
[admin:avi-controller]: healthmonitor:smtps_monitor> mail_data "HELLO!"
[admin:avi-controller]: healthmonitor:smtps_monitor> domainname example.com
[admin:avi-controller]: healthmonitor:smtps_monitor> ssl_attributes
[admin:avi-controller]: healthmonitor:smtps_monitor:ssl_attributes> ssl_profile_ref System-Standard
[admin:avi-controller]: healthmonitor:smtps_monitor:ssl_attributes> save
[admin:avi-controller]: healthmonitor:smtps_monitor> save
[admin:avi-controller]: healthmonitor> authentication
[admin:avi-controller]: healthmonitor:authentication> username xyz
[admin:avi-controller]: healthmonitor:authentication> password vhvhdlsh
[admin:avi-controller]: healthmonitor:authentication> save
[admin:avi-controller]: healthmonitor> save

The following are the SSL configurations used for SMTPS health monitor:

• SSL Profile: Select an existing SSL Profile or create a new one, as required. This defines the ciphers and SSL versions to be used for the health monitor traffic to the backend servers.

• PKI profile : Select an existing PKI profile or create a new one, as required. This is used to validate the SSL certificate presented by the server.

• SSL key and certificate : Select an existing SSL Key and Certificate or create a new one, as required.