Hi. I noticed after checking my server email queue, some strange emails. These are strange because they aren't from any account of mine. And I believe these result in Google banned my public IP. This is one of them: 339D2300CC0 127954 Tue Jul 11 10:53:33 m-r8bmwc4z880rg54ukwuisez9ii01ep7g3qes9f1uify888t7uyxu9g@bounce.linkedin.com (host alt1.gmail-smtp-in.l.google.com[142.250.153.26] said: 421-4.7.28 [MYSERVERIP 15] Our system has detected an unusual rate of 421-4.7.28 unsolicited mail originating from your IP address. To protect our 421-4.7.28 users from spam, mail sent from your IP address has been temporarily 421-4.7.28 rate limited. Please visit 421-4.7.28 https://support.google.com/mail/?p=UnsolicitedRateLimitError to 421 4.7.28 review our Bulk Email Senders Guidelines. e8-20020a056402088800b0051e196bf9ddsi1769174edy.375 - gsmtp (in reply to end of DATA command)) [email protected] What can I do to avoid this? Thanks.
This is the response from Google. Check the mail queue for one of the source emails. The most common reasons are a hacked email account or website on your server.
Yes, I know this is a Google reply but this is a copy/paste of my email queue. m-r8bmwc4z880rg54ukwuisez9ii01ep7g3qes9f1uify888t7uyxu9g@bounce.linkedin.com is the sender, isn't it? and [email protected] is the receiver. But I haven't any bounce.linkedin.com mailbox configured in my system. Then I don`t know why I'm seeing that in my email server queue. Thanks.
Examine mail log to see if your host has sent any e-mails to linkedin.com or @gmail -addresses. It would be better to post complete log lines as is in CODE tags, it might be easier to see what is going on. Is it really in mail queue? What is shown if you issue as root command Code: mailq Do examine mail log, that should show what has been happening.
Hi. After examining all configuration and mailboxes I discovered an email redirection that was the cause of that strange emails. I delete that and all back to normal. Thanks!!
