SMTP Smuggling

Fortinet is aware of the new SMTP smuggling technique.By exploiting interpretation differences of the SMTP protocol for the end of data sequence, it is possible to send spoofed e-mails, while still passing SPF alignment checks.FortiMail may be susceptible to smuggling attacks if some measures are not put in place. We therefore recommend to adhere to the following indications in order to mitigate the potential risk associated to the smuggling attacks:- Enable DKIM (Domain Keys Identified Mail) to enhance e-mail authentication. …

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