Resolved fail

[Sam333]

Hi All,

Can anyone please help explained what is mean by Resolved "Fail" in smtp log.

fortimail version 7.4.0 and can connect to the internet and resolve dns. Please give advice. Thank you very much for your help.

mail # execute nslookup name gmail.com

Non-authoritative answer:
Name: gmail.com
Address: 216.58.214.69

Column	Content
#	1
Date	2023-11-23
Time	21:39:55.174
Classifier	Not Spam
Disposition	Accept
From	SxxxSxxxx@axxxx.com
Header From	SxxxSxxxx@axxxx.com
To	xxxxxxv@gmail.com
Subject	Re: test
Message-ID	1466941125-8832@mail.axxxx.com
Length	6638
Session ID	3ANHdsis009970-3ANHdsiu009970
Client IP	172.16.20.3
Location	ZZ (Reserved)
Direction	out
Policy ID	1:1:2:SYSTEM
Domain	axxxx.com
Destination IP	10.10.10.15
Transfer Time	0.098338
Scan Time	0.109852
Level	information
Log ID	0200009971
Source	Internal
Mailer	mta
Resolved	FAIL
Type	statistics

[AEK]

Hello

This is expected behavior for private IP addresses (rDNS lookup).

https://community.fortinet.com/t5/FortiMail/Technical-Tip-Resolved-Fail-status-in-History-Log/ta-p/2...