Just a few months in the past it was delivered to our consideration that spam emails containing inappropriate content material are being despatched out and that it seems they’re coming from a Buffer-owned area (buffermail.com). The emails aren’t coming from Buffer or from buffermail.
On this submit, we’ll do our greatest to elucidate what has been occurring to this point for anybody who has been impacted.
To begin, many people are receiving emails with suspicious headlines like “Good day, e-mail id” or “bundle ready.” These emails seem to be coming from a Buffer area. In actuality, we will see that they’re coming from one other area and try to masks their content material as coming from Buffer — that is referred to as e-mail spoofing.
We needed to be completely sure that this sort of e-mail spoofing was certainly the reason for this challenge. To substantiate this, we analyzed the unique mail headers to confirm the place the emails have been coming from. We discovered the headers clearly exhibiting the verification checks had failed as anticipated within the case of spoofed mail. We additionally discovered that the servers sending the emails didn’t belong to us or any companies that we’ve got ever used. So in the long run, we have been in a position to affirm that this challenge was not a results of a misconfiguration on our finish.
Generally, spam filters from e-mail suppliers choose up on this habits and don’t put that content material in the principle inbox. Nevertheless, there’s at the moment a difficulty with Microsoft Outlook and Hotmail the place this sort of content material isn’t being despatched to spam folders.
As of January 2023, Microsoft has acknowledged that they’re conscious of this challenge and are working to repair it.
We want there was extra we might do on this state of affairs for the reason that attackers are impersonating a Buffer area — we’ve exhausted our listing of choices, although, and the remaining work lies with the e-mail suppliers to higher filter these spam messages.