Recent content by banderas20

Hi! No. What I want to achieve is more simple (and maybe impossible). From my POSTFIX mail server I want to send a mail directly to an existing account. ops mail server -> sendmail to [email protected]

OMG. I was away for a few hours and I found tons of info. Many thanks. About the outgoing port of AWS, I will replicate the exact setup with local VMs and see the results. I will read everything carefully and post my results. Thanks a lot to everyone!

Happy to share! ;)

Hi. I have set up a POSTFIX server in an AWS EC2 instance. If I try to send emails between local users using Sendmail, it works. However, if I try with an external account (gmail for example), it doesn't work. Command: echo "test email" | sendmail [email protected] POSTFIX Log...

Found out the solution. I had 3 DNS servers and the default behaviour of dig is to only use the first one.

Hi! I have set up a bind9 local DNS with rescursion turned off. From the DNS server, if I query google.es using DIG it returns: ;; WARNING: recursion requested but not available However, if I use HOST, it works: google.es has address 216.58.215.131 Same happens with NSLOOKUP nslookup...

Indeed it displays everything. The hard part (at least for me) is getting used to nmcli commands to set the parameters of each interface.

Hi. With Netplan it works like a charm. However, the config file of NetworkManager doesn't give as much info. If I can manage everything with Netplan + NetworkManager, it's perfect. Thanks to this thread, I learnt many things about networking. Thanks everyone!

Hi. With 2 NICs, NetworkManager is making a mess and only one of them works. If I bring one nic up, the other one goes down. I will try to set the properties with a tool like Netplan and NetworkManager as a renderer.

Hi. I'm running GNOME. I think I figured out what's happening. First, the kernel detects the network card. Then, the NetworkManager takes control over the NIC and assigns DHCP by default. That is why it works. When I tried to add a secondary nic, then none of both work until I modify the...

I used my interface name. The only useful thing is: /proc/kmsg: enp0s3. Link becomes ready I used debian-12.4.0-amd64-netinst.iso from https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-12.4.0-amd64-netinst.iso @osprey Running systemd-analyze blame shows networking.service...

Nothing found.... :( @osprey, good guide. But I'm trying to figure out which processes set up the initial connection via CLI and the files involved.

My /etc/network/interfaces file only shows auto lo. No other interface. My /etc/network/interfaces.d/ directory is empty. Hence my confusion :(. Which file/s contain the configuration applied to the current interfaces? @dos2unix . Yes. I know that. But which default configuration is being...

Hi. Yes. I also saw these lines mentioning networking.service, but I don't know where the config files are. Besides, I guess NetworkManager depends on networking. /etc/network/interfaces.d is empty, which confused me a bit. I expected to see config files for both services so I could...

Hi. I have a Debian Server VM box and the network cards work perfectly. However, I don't know which service is managing the network interfaces and how to change the way they work. The box uses NetworkManager and I can see some logs via journalctl. The thing is the file...