Queue Types

[localhost]

While integrating FortiMail in our monitoring system I recognised there are 6 different queue types:

Default

Default Slow

Incoming

Incoming Slow

Outgoing

Outgoing Slow

The difference between regular queue and slow queue is documented quite well:

• Regular mail queue When the initial attempt to deliver an email fails, the FortiMail unit moves the email to the regular mail queue.

• Slow mail queue After another two failed delivery attempts, the FortiMail unit moves the email to the slow mail queue. This allows the FortiMail unit to resend valid email quickly, instead of keep resending invalid email (for example, email destined to an invalid MTA) 

What's the difference between default, incoming and outgoing?

[Dirty_Wizard_FTNT]

• Default: Displays all email in the regular mail queue. • Incoming: Only displays the incoming email in the regular mail queue. • Outgoing: Only displays the outgoing email in the regular mail queue.

[localhost]

Wouldn't that mean: Default = Incoming + Outgoing?

That's just not the case. For example, I have mails in the default slow cue, but both incoming- and outgoing-slow cues are empty.

[Dirty_Wizard_FTNT]

Check the logs for the messages that got queued. The direction may not have been determined in which case they would go to default.

[MikePruett]

Dirty is right. Also, the default slow queue is the same as the default just with more failed attempts. The direction isn't a qualifier.