«SMTP Smuggling» is a vulnerability that allows to circumvent some mail checks at the receiver and therefore will allow additional spam and/or phishing messages through. Here is the list of what we currently know. Interested in the full story? I have written a German 🇩🇪 article on SMTP Smuggling and SEC Consult's selective (and untimely) disclosure. The SEC Consult article contains information about the software they tested. However, the information is largely unstructured. Here is a...
