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Hello,
I’ve been using this plugin for quite a while now without any problems. Recently I’ve started to have a major problem with email spoofing. Hundreds of emails are being sent from my domain to my clients disguised to come from me but are actually Russian spammers with malicious links.
The technical team at Sitelock identified WP Mail SMTP as the faulty plugin that has led to this security breach.
My gmail mailer is completely configured and connected with Client ID/Secret. I’ve also implemented DKIM and DMARC to try to mitigate the problem with no success.
Currently running 1.3.3 on updated WordPress Version
Please advise