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Topics - leors

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E-Mail / Fake users sending spam
« on: January 11, 2022, 02:40:26 PM »
On one server, I am facing problems with SPAM.
A few months ago, I noticed shots to unknown senders.
I mitigated the problem by blocking the recipient's domain.

Jan 11 08:47:53 cwp postfix/smtpd[18216]: NOQUEUE: reject: RCPT from localhost[]: 450 4.7.1 <recipient@random.tdl>: Recipient address rejected: 1; from=<non-existent-email@myserver.tdl> to=<recipient@random.tdl> proto=ESMTP helo=<myserver.tdl>

PHP's mail function is disabled.
I cannot detect the origin of these messages.

Pages: [1]