Introduction
This document describes when Delay Warning Messages are generated on the configuration of the Email Security Appliance's (ESA) bounce profile settings.
When Does Delay Warning Messages in Bounce Profile Settings Gets Generated?
Note: Delay Warning Messages are disabled by default in Bounce Profiles configuration.
Delay Warning Messages which are configurable in the Bounce Profile settings are generated by the ESA on the second delivery attempt to the recipient host. The messages can only be generated when the ESA receives a 4xx Simple Mail Transfer Protocol (SMTP) reply code on delivery attempt.
When an email encounters delayed delivery due to an 4xx SMTP reply code, the information is logged on the mail_logs and Message tracking logs with the associated delivery attempt.
Here is an example of the Delay Warning Message that is generated by the ESA in the mail_logs.
- First delivery attempt for Message ID (MID) 64855:
Mon Mar 5 14:21:04 2018 Info: New SMTP ICID 3160 interface Data Port (10.10.1.12) address 10.10.1.5 reverse dns host unknown verified no
Mon Mar 5 14:21:04 2018 Info: ICID 3160 ACCEPT SG None match ALL SBRS not enabled country not enabled
Mon Mar 5 14:21:04 2018 Info: Start MID 64855 ICID 3160
Mon Mar 5 14:21:04 2018 Info: MID 64855 ICID 3160 From: <matt@abc.com>
Mon Mar 5 14:21:04 2018 Info: MID 64855 ICID 3160 RID 0 To: <matthew@cisco.com>
Mon Mar 5 14:21:04 2018 Info: MID 64855 Message-ID '<op.zfdwolzf0ubsb2@mathew.cisco.com>'
Mon Mar 5 14:21:04 2018 Info: MID 64855 Subject 'sample'
Mon Mar 5 14:21:04 2018 Info: MID 64855 ready 494 bytes from <matt@abc.com>
Mon Mar 5 14:21:04 2018 Info: MID 64855 matched all recipients for per-recipient policy mail_policy_one in the inbound table
Mon Mar 5 14:21:04 2018 Info: ICID 3160 close
Mon Mar 5 14:21:04 2018 Info: MID 64855 interim AV verdict using Sophos CLEAN
Mon Mar 5 14:21:04 2018 Info: MID 64855 antivirus negative
Mon Mar 5 14:21:04 2018 Info: MID 64855 using engine: GRAYMAIL negative
Mon Mar 5 14:21:04 2018 Info: MID 64855 Outbreak Filters: verdict negative
Mon Mar 5 14:21:04 2018 Info: MID 64855 queued for delivery
Mon Mar 5 14:21:04 2018 Info: New SMTP DCID 7436 interface 10.10.1.12 address 10.10.1.25 port 25
Mon Mar 5 14:21:04 2018 Info: DCID 7436 TLS success protocol TLSv1.2 cipher DHE-RSA-AES256-GCM-SHA384
Mon Mar 5 14:21:04 2018 Info: Delivery start DCID 7436 MID 64855 to RID [0]
Mon Mar 5 14:21:04 2018 Info: Delayed: DCID 7436 MID 64855 to RID 0 - 4.1.0 - Unknown address error ('452', ['Too many recipients received from the sender'])
Mon Mar 5 14:21:04 2018 Info: MID 64855 to RID [0] pending till Mon Mar 5 14:22:04 2018 [Matt_custom_bounce_profile]
Mon Mar 5 14:21:09 2018 Info: DCID 7436 close
- Second delivery attempt for MID 64855:
Mon Mar 5 14:22:06 2018 Info: New SMTP DCID 7437 interface 10.10.1.12 address 10.10.1.25 port 25
Mon Mar 5 14:22:06 2018 Info: DCID 7437 TLS success protocol TLSv1.2 cipher DHE-RSA-AES256-GCM-SHA384
Mon Mar 5 14:22:06 2018 Info: Delivery start DCID 7437 MID 64855 to RID [0]
Mon Mar 5 14:22:06 2018 Info: Delayed: DCID 7437 MID 64855 to RID 0 - 4.1.0 - Unknown address error ('452', ['Too many recipients received from the sender'])
Mon Mar 5 14:22:06 2018 Info: Start MID 64856 ICID 0
Mon Mar 5 14:22:06 2018 Info: MID 64856 was generated for bounce of MID 64855
Mon Mar 5 14:22:06 2018 Info: MID 64856 ICID 0 From: <>
Mon Mar 5 14:22:06 2018 Info: MID 64856 ICID 0 RID 0 To: <matt@abc.com>
Mon Mar 5 14:22:06 2018 Info: MID 64856 ready 2863 bytes from <>
Mon Mar 5 14:22:06 2018 Info: MID 64856 queued for delivery
Mon Mar 5 14:22:06 2018 Info: MID 64855 to RID [0] pending till Mon Mar 5 14:23:06 2018 [Matt_custom_bounce_profile]
Mon Mar 5 14:22:06 2018 Info: Delivery start DCID 0 MID 64856 to RID [0]
Mon Mar 5 14:22:06 2018 Info: Message done DCID 0 MID 64856 to RID [0] [('to', 'matt@abc.com'), ('from', '"Mail Delivery System" <esa@lab.com>'), ('subject', 'Delivery Status Notification (Delay)')]
All the subsequent Delay Warning Messages are generated based on the Bounce Profile settings.
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