Postfix - Checking for an Open Relay | Knowledge Center | Rackspace Hosting

Postfix - Checking for an Open Relay | Knowledge Center | Rackspace Hosting

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日期:2026-04-22
Open relays are a bad thing — they allow anyone to send email from your mail server. The mail server does not check that it is authorized to send mail from the mail address on the third-party email. What this means is that anyone can send email via your C...看更多