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linux smtp relay


Linux SMTP relay – How we protect your mail servers from being open relays

Linux SMTP relay – How we protect your mail servers from being open relays

Protecting mail servers from being used as Linux SMTP open relays, is a major security task we perform as a part of our Dedicated Tech Support services for web hosting providers.

An open mail relay is an SMTP server that allows any host to send mails through it. If it is open relay, users can send mails through that Linux SMTP relay server without authenticating.
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