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Author Archives: Vyacheslav

Configuring RPS (Receive Packet Steering)

Receive Packet Steering (RPS) is a software implementation of RSS. Useful for example when there are fewer interrupts on the network interface than the processor cores.

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Posted byVyacheslav02.02.202102.02.2021Posted inLinux, NetworksTags: PerformanceLeave a comment on Configuring RPS (Receive Packet Steering)

Solution for ImportError: No module named web

Once I needed to disable the Nginx web server on the same server with iRedmail and install Apache2. And when I tried to start iRedadmin, it did not open, and in the Apache2 logs I saw:

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Posted byVyacheslav02.02.202114.10.2024Posted inApache2, LinuxTags: iRedMailLeave a comment on Solution for ImportError: No module named web

iRedMail. Adding a catch-all account

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.

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Posted byVyacheslav28.01.2021Posted inLinuxTags: iRedMailLeave a comment on iRedMail. Adding a catch-all account

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.

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Posted byVyacheslav28.01.2021Posted inLinuxTags: iRedMailLeave a comment on 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.

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Posted byVyacheslav16.01.202122.03.2025Posted inLinuxTags: FTP, SSLLeave a comment on Configuring FTPS in ProFTPd

Netis WF2411E Firmware Update

As an example, I will take a Netis WF2411E router with the firmware version 2.4.41346 installed and update it.

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Posted byVyacheslav09.01.2021Posted inNetisLeave a comment on Netis WF2411E Firmware Update

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.

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Posted byVyacheslav06.01.202104.04.2021Posted inLinux, MellanoxLeave a comment on 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.

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Posted byVyacheslav06.01.202106.01.2021Posted inLinux, MellanoxLeave a comment on How to update the Mellanox ConnectX driver

How to disable advertising messages from Kyivstar

Once I got tired of receiving advertising SMS messages from Kyivstar, and since there is no information on how to manually disable them on the official website kyivstar.ua, I wrote to technical support in the chat:

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Posted byVyacheslav06.01.2021Posted inOtherLeave a comment on How to disable advertising messages from Kyivstar

The story about how Lifecell and Vodafone mocked the client

Once SMS was no longer delivered from one Lifecell number to all Vodafone numbers, while SMS was delivered to numbers of other mobile operators successfully.

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Posted byVyacheslav06.01.202110.04.2021Posted inNews, OtherLeave a comment on The story about how Lifecell and Vodafone mocked the client

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