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Top Questions

21 votes
3 answers
4k views

What is the difference between 0.0.0.0/0 and 0.0.0.0/1?

11 votes
2 answers
3k views

What are the downsides of reboot-to-restore software in a corporate environment?

14 votes
2 answers
1k views

Unable to mount an XFS filesystem from Linux RAID6 array ("Log inconsistent")

10 votes
1 answer
693 views

Do SSL Certs containing two wildcards work (esp. on Let's Encrypt)? [duplicate]

3 votes
5 answers
968 views

Ansible OpenSSL Error with apt module

5 votes
1 answer
555 views

Setting up an Access Point, Raspberry Pi, and Laptop to serve a website in a classroom. "The internet in a suitcase" [closed]

3 votes
1 answer
494 views

Reject emails that fail reverse hostname resolution

4 votes
1 answer
239 views

Understanding how Unbound listen on Port 53

3 votes
2 answers
158 views

KVM: Best performance for all guests

0 votes
2 answers
421 views

Bad configuration option: pubkeyacceptedalgorithms

-2 votes
2 answers
117 views

How to protect email addresses after domain name expires?

0 votes
0 answers
374 views

proxy_fcgi:error: The timeout specified has expired: Error dispatching request to : (polling)

0 votes
1 answer
48 views

How to prevent 3rd party domains using our server/domains for email envelopes

0 votes
1 answer
208 views

Ansible | conditional statements should not include jinja2 templating | when group_name variable

2 votes
1 answer
125 views

Remove RRSIG record from GoDaddy subdomain

0 votes
1 answer
144 views

WSL-Docker: curl: (60) unable to get local issuer certificate

2 votes
1 answer
84 views

configure minio in docker to use https

0 votes
2 answers
223 views

Why did this incoming email get through Office 365 spam filters with a DKIM fail? What policy do I need to "tune"?

0 votes
1 answer
221 views

Getting could not connect to server: Connection refused Is the server running on host "localhost" and accepting TCP/IP connections on port 5432

2 votes
1 answer
103 views

DNS - Unbound - How to provide different IP for a server based on client network

0 votes
2 answers
53 views

FTP over SSH (not SFTP?) when files are on third server not SSH server

1 vote
2 answers
40 views

What program is being executed upon time command?

2 votes
2 answers
102 views

Redirect to other server and domain if file not found

0 votes
1 answer
73 views

spamhaus.org is blocking our IP

0 votes
2 answers
44 views

Raid 5 with hot spare (17+1) somehow became Raid 5 without hot spare (18 + 0)? (Dell Poweredge T640)

0 votes
2 answers
54 views

Two DHCP, One PXE

3 votes
2 answers
113 views

ZFS and SAN: issue with data scrubbing

0 votes
0 answers
140 views

Kubernetes pods failing with ImagePullBackOff when trying to pull image from AWS ECR

2 votes
1 answer
64 views

Dovecot claims ports are in use, netstat disagrees

0 votes
1 answer
103 views

How to install Google Cloud Ops Agent on Ubuntu 21.10?

2 votes
1 answer
102 views

unknown directive "rtmp" in /etc/nginx/nginx.conf

0 votes
3 answers
129 views

How to see which ports a process is using?

0 votes
0 answers
127 views

How can to resolve a coreDNS pods with status ContainerCreating - kubernetes

-3 votes
1 answer
46 views

Rows in a rack configuration [closed]

2 votes
1 answer
69 views

Can postfix log source ports for inbound SMTP connections?

1 vote
0 answers
112 views

Pod coredns stuck in ContainerCreating state with Weave on k8s

0 votes
2 answers
52 views

How to prevent unauthorized relay of mail in Postfix

0 votes
2 answers
108 views

Kubeadm 1.24 with containerd. Kubeadm init fail (centos 7)

0 votes
1 answer
105 views

VPN ports not opening on ubuntu server 22.04

1 vote
0 answers
104 views

Getting "Fargate requires task definition to have execution role ARN to support ECR images." when creating Fargate task but the role is defined

0 votes
2 answers
49 views

Why does Test-NetConnection indicate connection can be made, but I cannot visit the site?

0 votes
2 answers
60 views

Exchange mailbox UID confusion after deletion and re-creation with same alias

0 votes
0 answers
90 views

kubeadm init failing to connect through proxy

0 votes
1 answer
70 views

Routing between two network cards

0 votes
1 answer
69 views

How Microsoft licences work with MDT and WDS deployment?

0 votes
2 answers
69 views

Can I stop a SPF SOFTFAIL in Gmail when sending to and from addresses that have a mail alias?

0 votes
1 answer
69 views

Why is a windows domain user required and is there an alternative?


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