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@nataliiapolomkina shared a post, 2 years, 1 month ago
Mailtrap

What the SMTP Authentication Is and Why You Can’t Ignore It

How would you feel if anyone could send emails from your mail server? Greenlight for spammers – no way! That’s why Google and other email service providers protect their servers from unauthorized use. Senders need to authenticate and prove that they have a valid account. If they don’t, the server will reject their request. All of this is possible with SMTP authentication, also known as SMTP AUTH.