One customer once asked to set up a forwarding of all email from non-existent addresses in his domain to a specific email address, this is usually called catch-all or luser_relay in postfix.
Continue reading “iRedMail. Adding a catch-all account”Category Archives: Linux
How to add Alias to iRedMail
Once, on the same mail server with iRedMail, I needed to redirect mail from the old domain to the new one, so I decided to add an alias so as not to lose contact with clients who will write to the email addresses of the old domain.
Continue reading “How to add Alias to iRedMail”Configuring FTPS in ProFTPd
I will give an example of configuring FTPS in ProFTP, and prohibit simple connections without encryption.
Continue reading “Configuring FTPS in ProFTPd”Firmware Update HP 544+QSFP (764284-B21) Mellanox ConnectX-3 Pro EN
I once updated the driver for the Mellanox ConnectX-3 Pro EN / HP 544+ QSFP (764284-B21) network adapter and decided to update the firmware at the same time.
Continue reading “Firmware Update HP 544+QSFP (764284-B21) Mellanox ConnectX-3 Pro EN”How to update the Mellanox ConnectX driver
For example, I will update the driver for the Mellanox ConnectX-3 Pro EN / HP 544+ QSFP (764284-B21) network adapter that I installed in the HPE DL380 Gen10 server with Ubuntu Server 18.04.
Continue reading “How to update the Mellanox ConnectX driver”Replacing a word in Linux files
Once, when replacing the network adapter in the server, I needed to change its old name in the netplan configuration, that is, replace several hundred words in the file, so I came up with the command:
Continue reading “Replacing a word in Linux files”Solution “mod_auth_file/1.0: unable to use world-readable AuthUserFile /etc/proftpd/ftpd.passwd”
Once when running proftpd with configured users in a file, I noticed the following error:
Continue reading “Solution “mod_auth_file/1.0: unable to use world-readable AuthUserFile /etc/proftpd/ftpd.passwd””Mellanox ConnectX errors “Could not join netdev: No space left on device”
Once after installing the Mellanox ConnectX-3 Pro EN / HP 544+QSFP (764284-B21) network adapter into the HPE DL380 Gen10 server, I encountered errors in the /var/log/syslog file:
Continue reading “Mellanox ConnectX errors “Could not join netdev: No space left on device””Intel i40e driver update
For example, I will take an Intel XL710-QDA1 QSFP+ network adapter and a couple more with an Intel chip, for example, HPE 562SFP+, I will install them in an HPE DL380 Gen10 server running Ubuntu Server 18.04.
Continue reading “Intel i40e driver update”How to disable “New release available” email notifications on Ubuntu
Once I noticed that new servers running Ubuntu Server 18.04 operating systems periodically send email notifications:
Continue reading “How to disable “New release available” email notifications on Ubuntu”