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Issue with NIC? You can use the ip_route2 tool ip to display the statistics about a particular network interface. $ ip -s link show wlp1s0 3: wlp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000 link/ether c8:f7:33:15:0b:12 brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun ...


Wireshark is what you are looking for.


To use the postfix relay function, modify your /etc/postfix/main.cf file to include the following configuration: queue_directory = /var/spool/postfix command_directory = /usr/sbin daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix mail_owner = postfix mydomain = domain.com myorigin = $myhostname inet_interfaces = localhost ...


You need to either replace the | with && or let the script output the data to stdout and use |. When using &&, the mail command would only be run when the script exits with 0. When using the pipe character, your script needs to send the data to stdout so the pipe can pass it on to mail. In what you wrote, the script writes data to the file ...


Those messages are "bounces". They are usually caused by someone else sending an email to one of your users, and when the email can't be delivered, the mail server will generate a bounce message. You can tell them from regular messages because bounce messages always have the envelope sender <>. In this case, it would appear that the original message ...


Well I didn't manage to fix it but I installed an alternative solution which is, run the same PHP installation in NGINX on different port. I chose See this tutorial: https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-12-04

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