Recently we installed MAAS (Metal As A Service) and now we are going to do first login into web interface and we are going to do initial configuration.
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Tag Archives: Zeljko Medic IT Blog
Block Email Spam with Postfix SMTP server (Ubuntu 20.04)
We already went through email and DNS setup, but there is one thing I haven’t covered yet and is making life miserable for every IT guy/girl – spam.
You can manage spam via Postfix and here are some tips on how to do it.
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Setup DNS records for you email server
In order for you email to work and people can send and receive mails without problems you need to set DNS server records properly. Also, additional DNS records like SPF and DKIM can help your email server reputation, and better spam detection.
Lets go through simple DNS setup for email server.
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Add client to FreeIPA domain on CentOS / Red Hat
Let’s join client to our FreeIPA domain we setup earlier.
We will be joining CentOS 8 to the FreeIPA server we previously set on RHEL 8
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Disable virbr0 nic in CentOS / Red Hat
You installed CentOS8/RHEL8 and you setup only one network interface, but some random IP address still shows up, and you see virbr0 interface – what is it, what does it do? Do I need it?
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