SMTP notification. Watchguard XCS

Mail Delivery Settings

ƒ Any — Reject the message if any recipient rejects the message.

ƒ Never — The message will never be rejected, regardless of any configured reject actions. For recipients that rejected the message, the message will be discarded without notification to the sender.

Send EHLO

Always send EHLO when communicating with another server, even if their banner does not include

ESMTP. Disable EHLO if you are experiencing communications problems with specific SMTP servers.

Disabling ESMTP will disable TLS encryption on outgoing connections.

SMTP notification

Administrators can select the type of notifications that are sent to the postmaster account. Serious problems such as resource or software issues are selected by default for notification.

Resource

Mail not delivered due to resource problems, such as queue file write errors.

Software

Mail not delivered due to software problems.

Bounce

Send postmaster copies of undeliverable mail. If mail is undeliverable, a single bounce message is sent to the postmaster with a copy of the message that was not delivered. For privacy reasons, the postmaster copy is truncated after the original message headers. If a single bounce message is undeliverable, the postmaster receives a double bounce message with a copy of the entire single bounce message.

Delay

Inform the postmaster of delayed mail. In this case, the postmaster receives message headers only.

Policy

Inform the postmaster of client requests that were rejected because of policy restrictions. The postmaster will receive a transcript of the entire SMTP session.

Protocol

Inform the postmaster of protocol errors (client or server), or attempts by a client to execute unimplemented commands. The postmaster will receive a transcript of the entire SMTP session.

Double Bounce

Send double bounced messages to the postmaster.

Received header

The Received Header is the mail server information displayed in the Received: mail header of a message. The default system name can be modified to a more generic identifier to prevent attackers from knowing the server details.

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