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# MDaemon Email Server 26.0

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POP Before SMTP | Scroll Prev Top Next More

POP Before SMTP

Local sender must have accessed mailbox within last [xx] minutes

With this feature enabled, whenever a message is purported to be from a local user, that user account must have logged in and checked its local mailbox within the specified number of minutes before it will be allowed to send mail.

Do not apply POP Before SMTP to messages collected via ATRN

Check this box if you want messages collected via ATRN to be exempt from the POP Before SMTP restriction.

Do not apply POP Before SMTP to messages sent to local accounts

Click this checkbox if you want messages that are sent from one local user to another to be exempt from the POP Before SMTP requirement. Ordinarily, MDaemon will enforce the requirement as soon as the sender is known, but when this control is enabled MDaemon will wait until the recipient of the message is revealed before determining whether or not it is required.

Do not apply POP Before SMTP to messages from trusted IPs

If this checkbox is enabled, messages arriving from an IP address listed on the Trusted Domains screen will be exempt from POP Before SMTP.

| You can exempt authenticated sessions from the POP Before SMTP restriction via an option on the SMTP Authentication screen.

MDaemon v26.0.0 - March 2026. Copyright © 1996-2026. All rights reserved. MDaemon Technologies