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gmichailidis · 01-30-2023

Description This article explains how to disable SMTP AUTH for IP addresses with a reputation for spam. The SMTP authentication option may create large volumes of activity logs due to spammers using automation to guess passwords or otherwise breach s...

gmichailidis · 11-01-2022

Description This article explains how to detect QR-coded URL categories in the body of an email. Scope Fortimail V7.2. Solution QR codes can be scanned to direct users to websites associated with the codes. It's possible to enable QR code URL scannin...

gmichailidis · 09-22-2022

Description This article describes how to successfully perform SPF check on mails from protected domains, when using a private DNS. Scope All FortiMail Solution When internal mail flow reaches the FortiMail from an authorized public IP address and th...

gmichailidis · 09-22-2022

Description The article describes how to use the DKIM key pair of a parent domain and publish it on the DNS servers, in order to sign outbound emails of associated domains. Scope All FortiMail Solution Firstly, create a new DKIM key pair on FortiMail...

gmichailidis · 09-21-2022

Description This article describes how to configure FortiMail to take the AS profile action, overriding the DMARC record policy. Scope V7.2 Solution In FortiMail v7.2, FortiMail offers three different options regarding which action to take after a fa...

gmichailidis · 10-05-2022

Hi Scott, From the FML side, you can use the 'Authentication Reputation' feature in order to detect the unwanted IPs trying to authenticate and temporarily block them. The 'Mail' option applies to this type of authentication attempts, so make sure it...

gmichailidis · 09-26-2022

Hello Firdausi, Usually, this log would indicate an issue with the DKIM public key or modifications in the message body. However, the 'DKIM Check Failed' log is not visible in the screen shot. It would be best to raise a TAC case for this issue, as w...

gmichailidis · 06-17-2022

Dear @admin_kshb, As you mentioned, the mail is sent from a computer in your network and the client IP in the logs is "10.99.1.106". - In this case, the SPF will be skipped since the email is coming from a private IP address.No SPF check is performed...

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Technical Tip: How to disable SMTP AUTH option for IP addresses with a bad reputation

Technical Tip: QR code URL detection

Technical Tip: Implementing SPF check for protected domains when using private DNS server

Technical Tip: Configuring DKIM signing for associated domains

Technical Tip: Configuring FortiMail to apply DMARC action of Antispam profile instead of DMARC Policy action

Re: SMTP Auth Failures on Fortimail How to prevent

Re: Email delivery issue to yahoo with Error DKIM Check Failed. The body hash is not valid.

Re: Internal SFP Check fail (FORTIMAIL)

Re: Internal SFP Check fail (FORTIMAIL)

Technical Tip: QR code URL detection

Re: Email delivery issue to yahoo with Error DKIM ...