Delivery Settings 25
Advanced Delivery Click the Advanced button to reveal options for advanced SMTP (Simple Settings Mail Transport Protocol) settings and SMTP notifications.
Advanced SMTP Settings
■SMTP Pipelining — Pipelining allows more than one SMTP command to be inserted into a network packet which reduces SMTP connection times. Some mail servers may experience problems with SMTP command pipelining and you may have to disable this feature if required.
■ESMTP — ESMTP (Extended SMTP) extends basic SMTP functionality to support additional media types in email messages. Some mail servers may not support ESMTP and you may have to disable this feature if you are experiencing problems.
SMTP Notification (Advanced)
Select the type of notifications that are sent to the postmaster account.
■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
