One is to properly configure the mail relay, one of the most important aspects of email server security. All email servers have this option, and you can specify which IP addresses will act as a relay.

Cybercriminals found a way to send millions of “perfectly spoofed” phishing emails thanks to a vulnerability in Proofpoint’s ...

The behavior on modern sendmail servers to refuse to relay mail can bite you, however, if what you want is to be able to send mail from a subdomain to systems on your parent domain.

“All email messages are deleted from our relay servers after they’re delivered to you, usually within seconds,” the iPhone maker says. AP Technology Writer Barbara Ortutay in Oakland, Calif ...

Firefox Relay isn't necessarily for everyone. Email sizes are still capped at 10MB, and you'll want a Chrome extension if you aren't using the Firefox browser.

Guardio Labs helped discover the phishing campaign and security gap in Proofpoint's email relay servers. In May 2024, they notified the firm and helped them fix it. The EchoSpoofing campaign. To ...

Vox has fixed an issue with an email relay server which resulted in email addressed accidentally being exposed. The head of Vox Managed IT, Barry Kemp, said Vox Managed Services uses an email ...

Cybercriminals found a way to send millions of “perfectly spoofed” phishing emails thanks to a vulnerability in Proofpoint’s email relay servers. Experts from Guardio Labs revealed the ...