Latest Server related questions

Score: 0
SMTP relay with FQDN, but SpamAssassin marks FSL_HELO_NON_FQDN_1 and HELO_NO_DOMAIN
br flag

my mail provider (posteo.de) offers an FQDN during the HELO/EHLO exchange (e.g. mout2.posteo.de) – which is seen by policyd-spf (s. below) – but SpamAssassin on a receiving server marks the relay as offering no FQDN or domain:

Feb  2 06:17:10 eden policyd-spf[478301]: prepend Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=185.67.36.66; helo=mout02.posteo.de; envelope-from=xxx@posteo ...
Score: 0
zimspy avatar
Is there a way to edit Android OAUTH SHA1 fingerprints in the Google Cloud Console
br flag

We've been working on an app for the better part of 1 year now. We set up an Android OAUTH credential for using with Google Sign in. We used a debugging SHA1. Now, we are getting close to release and would like to change to the release SHA1. Unfortunately, the Google Cloud Console shows this error: enter image description here

when we try to change the key. Is there a way to change the key without having to change our apps packag ...

Score: 0
eheu avatar
Does my swapping server with ~80GB available RAM need even more?
mx flag

I'm administering a Debian Linux x86_64 server with 125GB RAM, a 10GB swap partition and a swappiness value of 60.

A free -gw output prints:

              total        used        free      shared     buffers       cache   available
Mem:            125          20           1          25           0         103          78
Swap:             9           1           7

Every night, a cron job runs which  ...

Score: 0
mocart avatar
squid4 proxy with only whitelist allow policy for all
it flag

Ubuntu 20.04; Squid 4.10 (build with ssl);common dns-server for clients and server 192.168.15.1

I can't configure squid4 proxy with only whitelist(with SSL) allow policy for all. I build squid by sources with ssl support, and generate cert, all works (when allow all for all), but when i configure squid to allow only whitelist, it not works: all users have permissions for all sites, not only whitelist ...

Score: 0
Thijmen avatar
When tagging EC2 instances, is it possible to automatically tag the attached services (such as volumes)?
cn flag

Is it possible in AWS to automatically tag services that are related to an EC2 instance when tagging the EC2 instance itself? To illustrate, when I tag the EC2 instance in the tag manager, services related to the EC2 (such as volumes) remain untagged. Manually tagging all related resources seems like a lot of redundant work - is there any way to automate this?

Score: 0
Muhammad Numan avatar
How to get Azure Policy Rule JSON script for existing resource
in flag

I want to create the custom policy for our databases. the default PITR Backup policy is 7 days but I want that all our newly added databases should be 35 days backup policy, Please any one guide ma how can i get the JSON format from 35 PITR backuped database ?

Score: 2
David avatar
QEMU KVM hangs "Booting from Hard Disk... "
ru flag
  • Ubuntu 20.04 server (no GUI) as host

  • several guests working perfectly, each with its own LV

  • I created an LV for a VM called "test", similar to working guests

  • Partitioned the LV: one ext4 bootable partition, one swap

  • root system rsync-d onto the bootable partition.

  • created a new VM using virt-install thus:

    virt-install --name=test
    --memory 2000
    --vcpus ...

Score: 0
Abhishek Rai avatar
/etc/sudoers is owned by uid 1000, should be 0
ae flag

I accidentally changed ownership of etc folder in a lightsail bitnami AWS machine. Is there a way to get the ownership back to root. The main problem seems to be that the root account doesn't have a password, so the password I enter is for the user bitnami. That doesn't work.

E.g Command

bitnami@ip-17x-xx-x-xx:/etc/sudoers.d$ pkexec chown root:root /usr/bin/sudo && chmod 4755 /usr/bin/sudo
= ...
Score: 0
MrCalvin avatar
Windows VM suddenly run very slow in KVM/QEMU
cn flag

I have several times experience a Windows VM suddenly start to run extremely slow, seems mostly related to slow storage IO. Seen this in different versions, but in this particular case is Win10 LTSC 1809

This happens whatever storage configuration I use (qcow2/raw image, block-device, VirtioSCSI or VirtioIO).

If I reinstall Windows using the same VM-XML and VM disk-storage the VM runs fine so it can ...

Score: 0
Matthew Grant avatar
Combining Mix Use (MU) and Read Intensive (RI) SSD in same Raid array
cn flag

I know you cannot combine mixed drive types in an array eg. SAS/SATA or SSD/HDD. What about identically sized SATA SSD in the MU and RI options?

RAID-5:
4x P18434-B21 - HPE 960GB SATA MU SFF SC MV SSD - Mix Use, currently installed
4x P18424-B21 - HPE 960GB SATA RI SFF SC MV SSD - Read Intensive, want to expand with these.

The only difference in spec I can find is the write cycles each one can handle, ...

Score: 0
Copy Run Start avatar
DNSMASQ DHCP with Multiple VLANS --- How to identify the originating VLAN?
jp flag

I'm curious as to what best practice would be when serving DHCP to multiple VLANs from a single DNSMASQ instance.

(The DNSMASQ server is a KVM guest.)

Do I:

A: Create a virtual NIC on the DNSMASQ server for each VLAN and serve an address range based on incoming NIC?

or

B: Create a dnsmasq tag for each dhcp-circuitid provided by the DHCP Helper on each VLAN?

or

C: Is there an simpler way to achiev ...

Score: 0
Multiple session host servers with same application
in flag

We have one application running on Azure Cloud VMs. we have 2 VMs, VM-1 is installed with domain controller and RDS roles and features and VM-2 it is our application server we have deployed application on this server and published through RDweb. Client are accessing the application via terminal services, we have specifications define on the application server to cater up to 50-60 users now the capacity  ...

Score: 5
SPF/DKIM/DMARC for Gmail "Send mail as" via smtp.gmail.com on external domain
cn flag

Since "Google Apps" / "Google Apps for business" / "G-Suite" / "Google Workspaces" free tier is being discontinued, I need a solution to migrate my ~30 extended family to a sustainable solution.

I'm looking at the option of having them each piggy-back off a personal @gmail.com address they should each create, forwarding the email, and adding the address using "Send mail as" in gmail, using Google' ...

Score: 0
matteo avatar
Pros/Cons of running separate user accounts for an administrative subdomain?
tr flag

What are the pros/cons of creating a separate account for an administrative subdomain rather than adding a subdomain under the same account?

Specifically, but limited to:

  • Server load/process management (eg: process hanging/conflicts).
  • Server security.
  • MySQL query processing (eg: process heavy query hanging).
  • Cross-site code library sharing (eg: storing only 1 copy of a code library with Read, Write, ...
Score: 0
tlehman avatar
TCP servers on macOS Catalina 10.15.7 not sending a SYN/ACK
ru flag

I have a macOS laptop running Catalina (10.15.7), using the built-in WiFi interface. I have a Thinkpad laptop running Ubuntu 20.04, and a Windows 11 Desktop. I'm trying to access a webserver on my macOS laptop but the browser returned ERR_CONNECTION_REFUSED. To dig deeper, I opened up Wireshark and noticed that the TCP SYN was being sent to the macOS server (and being received there), but there was no S ...

Score: 1
Josh Loecker avatar
Debian server showing "read only file system" repeatedly
in flag

I am having issues with being unable to SSH into my server, running Debian 11. If I try to make a folder or file, I get an error that says mkdir: cannot create directory ‘/tmp/test’: Read-only file system.

As suggested by this link, and a large swath of others, I can fix this by entering safe mode and running fsck.ext4 /dev/sda, but it only helps for 24-48 hours.

I got a new SSD about two weeks ago (s ...

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