Hi,
A lot of spammers are trying to send spam email to numerous non-existent users ending with our domain names. Our log shows many many lines such as follows:
[209.101.126.107] F=<[email protected]> rejected RCPT <[email protected]>: authentication required
How do we stop them?
Thank you in advance.
A lot of spammers are trying to send spam email to numerous non-existent users ending with our domain names. Our log shows many many lines such as follows:
[209.101.126.107] F=<[email protected]> rejected RCPT <[email protected]>: authentication required
How do we stop them?
Thank you in advance.