serverfault.com

I have been working to manage a mailing list with mailman3 in a virtual network where I have my own mail server but it always says the same obscure error. This is the content of my /etc/mailman3/mailman.cfg file (I'm only including the section I modified): #... [mta] incoming: mailman.mta.postfix.LMTP outgoing: mailman.mta.deliver.deliver smtp_host: smtp.mydomain.org smtp_port: 587 smtp_user: [email protected] smtp_pass: mailman smtp_secure_mode: starttls smtp_verify_cert: yes smtp_verify_hostname: yes lmtp_host: 127.0.0.1 lmtp_port: 8024 configuration: python:mailman.config.postfix The SMTP host (Postfix, same host as Mailman) works well and a DNS server has a working zone for mydomain.org configured. So Mailman is able to create/delete lists and suscribe/unsuscribe users to/from those lists, but just doesn't send any mail (the notification mails, invitations, etc.). This is the contents of

I have a host (192.168.168.1) with dnsmasq as a DHCP server with a range of just one IP configured: bind-interfaces interface=eth0 dhcp-range=192.168.168.2,192.168.168.2,255.255.255.0,12h dhcp-option=3,192.168.168.1 dhcp-option=6,192.168.168.1 The first client receives the IP address. After the first client is disconnected, a second client connects and the server rejects it's DHCP request with "address not available" message. /dev/null as leases file doesn't help, looks like the deamon stores leases in-mem and uses the file only for reboot/restart. Is that possible anyhow? Maybe with some another server?

I have a working postfix installation on a local server, that works by sending my outgoing mail through mailgun SMTP as a smarthost. This setup works. I copied the full /etc/postfix directory on to my remote server, restarted postfix, and outgoing mails don't reach their destination, and get these lines in the logs: Feb 12 07:43:52 mailer postfix/smtp[1480999]: warning: SASL authentication failure: No worthy mechs found Feb 12 07:43:52 mailer postfix/smtp[1480999]: 4BCC4470FB: to=<[email protected]>, relay=smtp.mailgun.org[34.160.157.95]:587, delay=1087, delays=1086/0.05/0.61/0, dsn=4.7.0, status=deferred (SASL authentication failed; cannot authenticate to server smtp.mailgun.org[34.160.157.95]: no mechanism available) So I want to know what went wrong (especially given that when I run a program on the remote server that sends e-mail using mailgun as SMTP server directly, it succeeds): Is there a way to see the SMTP transcrip

I have a UDM Pro running UniFi OS 5.0.12 and Network 10.0.162 in a children's library. I have tried using the following DNS setup to force safe searches. It works for DuckDuckGo and Pixabay but not for Brave, Bing, Google or YouTube. . The results differ for the different systems: search.Brave.com will not load, and Bing, Google and Youtube default to non-filtered searches. Any thoughts on what am I missing here?

I would like to route all the network traffic of a specific executable through VPN, while at the same time route all other traffic through the default interface. The extra complication being that I am trying to do this remotely into a VPS server with a single NIC. I can not experiment at home because I only have a wireless interface and the guides I am following fail for wlan interfaces (Device does not allow enslaving to a bridge. Operation not supported). So, I am following this guide (https://gist.github.com/EnigmaCurry/2a199eb35f2bbf23d55ff50dbcc57959): ip link add name br0 type bridge ip link set br0 up But this command cuts me off from the server: ip link set eth0 master br0 On the other hand, this https://superuser.com/a/1516

Spamhaus is blocking my mail servers (mail.die.de) ip 92.204.4.245. It says the HELO lookup doesn't match. According to spamhaus, my helo is "woelfer.de". And yes, that would be incorrect. However, my HELO is actually "mail.die.de". I just confirmed this in settings and i also used aboutmy.email, which also confirms HELO is "mail.die.de". (We have never sent any spam, our google spam rate is 0.00%). Any ideas what might be causing this?

I run a Rocky Linux 10 VM. Today I did a dnf update. After that the system behaves strange. I cannot shutdown -r now or reboot. Entering systemctl daemon-reload gives me: Failed to connect to system scope bus via local transport: Connection refused Looks like the DBus is damaged. I don't know which package is the guilty one, as very many packages are updated. Any ideas?

I have a PFsense firewall that is rejecting authentication on a peer to peer IPsec. Why? Very hard to tell if you don't know where to look. parsed IKE_AUTH response 1 [ N(AUTH_FAILED) ] is all I have. The other side can provide only the parameters, and I need to provide them with what's wrong. Can this be done? How do I find out why it's doing that? I need to decrypt. How do I decrypt? What's an SK_ei? What's an SPI? I see the https://docs.strongswan.org/docs/latest/plugins/save-keys.html "plugin". Plugin to what? Where? I found that adding this to the plugins section in /var/etc/ipsec/strongswan.conf (What's configuration doing hiding in /var?) should get me somewhere: save-keys { load = yes esp = yes ike = yes wireshark_keys = /root/.config/wireshark

I have my own postfix which is sending emails through some external service. This external service is Roundcube but with one address "from" configured (account, not alias). I have already catch-all service which moves all emails coming to my domain to one account, but need the other way - to send as any [email protected]. Is it possible to configure that with postfix on my side or in roundcube from the external service but not creating aliases nor new accounts?

Normal Nano interface: My error: There are all dependencies from ldd /usr/bin/nano output in chroot jail: tree lib lib64 lib `-- x86_64-linux-gnu |-- libacl.so.1 |-- libc.so.6 |-- libgcc_s.so.1 |-- libm.so.6 |-- libncursesw.so.6 |-- libpcre2-8.so.0 |-- libselinux.so.1 `-- libtinfo.so.6 lib64 `-- ld-linux-x86-64.so.2 ldd /usr/bin/nano linux-vdso.so.1 (0x00007fde71536000) libncursesw.so.6 => /lib/x86_64-linux-gnu/libncursesw.so.6 (0x00007fde714ad000) libtinfo.so.6 => /lib/x86_64-linux-gnu/libtinfo.so.6 (0x00007fde7147a000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fde7129800