How to show ip for postfix smtp
The current connection over 25 port command: watch ‘netstat -na | grep :25’ with this command, you can see the external ip that user the server to send emails. while …
How to unban ip with Failban
fail2ban-client set postfix unbanip 32.227.233.171 how to show jail list : fail2ban-client status how to view the status of a jail: fail2ban-client status roundcube show all the ipa for all …
How to remove from Postfix queue only one mail address
execute this command : vim postfix-delete.pl insert this code: #!/usr/bin/perl $REGEXP = shift || die “no email-adress given (regexp-style, e.g. bl.*\@yahoo.com)!”; @data = qx</usr/sbin/postqueue -p>; for (@data) { if …
Install nmap and check which ports are open.Centos 7
yum install nmap now scan the ports with : nmap -sT -O localhost result: Nmap scan report for localhost (127.0.0.1) Host is up (0.000083s latency). rDNS record for 127.0.0.1: localhost.localdomain …