If so, you are likely a victim of email backscatter.
Normally, a person might receive NDRs in bulk, informing them that their emails could not be delivered.
This results in lag, or the mail server may even become completely inoperational, like in aDDoS attack.
However, if you didnt send out the emails initially, those NDRs might just be backscatter.
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What is an email backscatter?
An NDR is issued against every email that could not be delivered.
Therefore, instead of the NDRs being directed toward the original sender, innocent users face such consequences.
Note that not all spoofed emails generate backscatter.
Mail servers are configured to handle spam and spoofed emails.
They might even be configured to allow them through, or simply reject them without a bounce-back message.
How bad could it be?
Things are a bit more complicated than that.
DMARC defines the rules for handling unverified emails from SPF and DKIM.
you might check your domains email security using ourEmail Security & Deliverability Checker.
Use disposable email aliases
Email aliases are like nicknames for the same email address.
you’re free to change email aliases and redirect them to the same email account.
This technique allows you to use a different alias in case the old alias starts receiving backscatter.
Avoid leaving email addresses in public spaces
Hackers normally collect email addresses and legitimate domains from public forums.
Try not to leave your email addresses in such places as they could be used for spoofing.
This will prevent hundreds and thousands of backscattering emails from ending up in your inbox.
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source: www.itechtics.com
