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49 views

Exim + Dovecot sending or receiving an email occurs the error: Unknown user

I'm running a mail server with CentOS 7 + Exim 4.92 + Dovecot 2.2.36 and RoundCubeMail as web interface, and have the following problem: when I send to or receive from emails which is not admin@ or ...
0
votes
0answers
21 views

unusual high cpu usage by php-cgi and mysql

Since several days ago I've been seeing unusual high CPU usage of my VPS, it jumped from avg 2% to 80%+, along with high outbound traffic and low inbound traffic and very high Disk I/O as well. With ...
0
votes
1answer
23 views

Cannot build image container with Podman because of runtime error with invalid memory address

Dockerfile: FROM vault:latest RUN apk --no-cache add \ perl-utils Command I use: podman build -t vaultplugin vaultplugin.Dockerfile The error I am getting: panic: runtime error: invalid ...
0
votes
0answers
26 views

What does this OpenVPN client level 11 verb output tell us about the SSH connection hangs/stalls we are experiencing?

Overview After setting up OpenVPN, we are able to connect over SSH (e.g. to 10.8.0.9), but the SSH connection hangs/stalls, usually after about 2-minutes. The SSH connection is from Ubuntu 18 on WSL ...
0
votes
1answer
33 views

a stop job is running for /nfs - server will not shut down

I have an nfs mount on my base system, which, is targeted at a VM on that host. When shutting down the system, the VM went down first and and my base system was stuck trying to unmount the disk: [ ***...
0
votes
0answers
18 views

Can I use snap to install nextcloud on a server already running Apache?

Nextcloud is an open source cloud data server. On OS's with snapd you can install the whole thing as a snap: sudo snap install nextcloud That seems magical, but I am stuck there. My server was ...
0
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0answers
43 views

How to configure redirect of HTTP to HTTPS and keep end-to-end SSL via Apache Proxy

I'm currently testing the following scenario in our lab environment to make our production web sites more available. I want to be able to update/reboot a single server without taking down any of our ...
0
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0answers
15 views

Tomcat9 performance issue while writing the response payload to network

We have a high TPS web application and we have upgraded to Tomcat9 from Tomcat7 recently. We have observed increased latency in few of our apis which return more response payload. These affected apis ...
0
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0answers
29 views

How to in-place-upgrade Windows 2012 R2 connection broker to 2016/2019?

I have a 2012R2 RDS infrastructure. Connection Broker, Webinterface, Gateway Manager are running on the same machine with Windows 2012 R2. Session Hosts are both 2012 R2 and 2019. Database and ...
0
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0answers
16 views

Nginx static website with wordpress blog routing

I have a problem with nginx config and after spending hours of trying different solutions I still can't make it work. I have a root folder /var/www/x where I have my static website placed, lets say ...
0
votes
0answers
13 views

Kerberos: how to copy keytab onto UNIX / Linux host?

I have created host/my.new.computer@MY.REALM.COM, with a random password. It needs to be copied to my.new.computer. It's obviously not overly hard to do that; what I'm looking for a way that's both ...
0
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0answers
14 views

IIS/HTTPS - TCP Data ACK missing

I am having a problem with a server (Windows Server 2016) in production. I have a provider who sends me data via HTTPS and I have to respond to him via XML. I receive between 700 and 1000 calls / day ...
0
votes
1answer
31 views

What are bounce domains good for?

I'm running my own spam filter. Sometimes I see newsletters being sent from a bounce domain (eg. bounce-1355_html-xxxx-xxxx-xxxx-xxx@bounce.news.xxx.ch. Does anyone know what such domains are good for?...
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0answers
14 views

Is it possible to create an AD policy or registry setting to prevent RAS connection settings being edited by user

Is it possible to prevent a Windows user in an AD environment being able to edit settings for a RAS connection like username, password etc? Either with a policy or by making a registry change?
0
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0answers
37 views

Random “Connection resets by peer” with redis-benchmark

I've got several linux hosts in office network. When I run Redis server on one of them, redis clients receive random errors "Connection reset by peer". We've noticed these errors with our own ...
0
votes
0answers
25 views

Can not create SQL Database using “Azure SQL Database Create New”. Location is no supported

When I select create a SQL Database option and select new in Database server row of the "Azure SQL Database Create New" For all selection of items of the "Location"; I get the message "This location ...
0
votes
0answers
21 views

Advertisement-based WiFi in ubuntu server? [closed]

I need to enforce my clients to visite a specifice website when they are connecting to my ssid for free or watching a video. i know that i need to use the next requirements : - ubuntu server - Apache ...
0
votes
0answers
8 views

Windows Server 2016 Standard Essentials Experience Anywhere Access Not Loading Folders or RDP

I recently configured a server 2016 standard server with the essentials experience role. The anywhere access is running behind a reverse proxy which is forwarding requests as SSL at this moment (I ...
0
votes
1answer
15 views

Can I setup Synology DSM to only one disk and then pull in data to setup RAID 1 afterwards?

Given situation: Synlogy with 2x1TB (disks not further needed) MyCloud with 2x3TB (Raid level 1) Goal: I want want to run the 3TB disks in the synology. When I switched disks Synology wants to ...
1
vote
1answer
21 views

Microsoft Active Directory kerberos returns unknown principal

I m trying to authenticate the host for kbr5p nfs mount where Microsoft active directory is acting as the Kerberos server. sudo kinit -k -t /etc/krb5.keytab host/ROBODAROBODA@EXAMPLE.COM kinit: ...
0
votes
1answer
11 views

specifying server port (not postgres port) for pg_dump / psql

I have a server named as servername.mydomain.com. I can do ssh to this server using a port number X using: ssh myusername@servername.mydomain.com -p X From this server I can run: psql -h localhost ...
0
votes
0answers
14 views

Storcli - migrate from RAID1 to RAID10

I have a system with two hard drives set up in RAID1. I've purchased another two - same model/size etc. - and now I want to reconfigure them to RAID10. I have storcli installed in VMWare and is ...
0
votes
0answers
8 views

Apache/2.4.41 (Ubuntu 18) - proxy_wstunnel_module, no protocol handler was valid for the URL /gps/api/socket (scheme 'ws')

Im trying to configure a proxy on my ubuntu 18 server, using apache 2.4.41 and proxy_wstunnel_module. The apache log returns a message: [Sat Apr 04 14:41:02.591188 2020] [proxy:warn] [pid 10273] [...
0
votes
0answers
15 views

Appengine app.yaml HTTPS redirect with secure flag isn't working

My application is deployed in Google AppEngine and my DNS is in GoDaddy. My app.yaml is like such: handlers: - url: /.* http_headers: X-Forwarded-Proto: https script: auto secure:...
0
votes
0answers
12 views

About mail server and imap ha active-active cluster

I have setup a mail server, for testing. My goal is to have a HA mailserver with imaps, when a client connect to a virtual ip, it redirect to two real servers, if a real server crash the other real ...
0
votes
1answer
41 views

Database Is lost when Docker Container is stopped. How to recover?

I have the following compose file, from this project: version: "3" volumes: static-files: driver: local postgres: driver: local services: db: image: postgres:11.1 ...
0
votes
1answer
37 views

Requirements for certificates to sign PDFs in Adobe Reader?

I'm trying to set up PDF digital signatures using certificates generated by openssl. I have generated a CA certificate, and used that to sign end user certificates, which I archive in PKCS#12 format. ...
1
vote
0answers
7 views

AWS Beanstalk Auto-scaling Scaling Triggers with UnhealthyHost count and Health Checking

I have my scaling triggers set to look for an un-healthy host count but it does not seem to be working. Now to test this - I am SSHing into one of my instances and halting the HTTPD service. Then, ...
0
votes
0answers
31 views

Problems updating to Wordpress 5.4 [closed]

Before all, I'm not a developer, I have minimum knowledge. I have a problem in Wordpress 5.4 autoupdate. I hosted this CMS in Google Cloud and before this update I had no problems updating it. My ...
0
votes
0answers
5 views

How do you get rdiff-backup to show filenames as it copies?

Is there a way to have rdiff-backup show filenames as it copies? Something akin to rsync -v I have tried all verbosity levels, from -v0 to -v9 and none show filenames or during backup. Using ...
0
votes
1answer
12 views

linking G Suite and Windows Domain Controller for user management

I manage a small business and use G Suite for user management of all google apps as well as authentication for as many third party services as possible (like slack, atlassin and so on). Then we also ...
0
votes
0answers
27 views

How config nginx and joomla? the site only loads the main page

I've installed joomla 3.9.16 in a nginx 1.7 server (fastcgi). When I try to install joomla, installer stop and backed to the main page. Also if i use installed joomla manually every urls looks great ...
0
votes
1answer
12 views

Is it possible to get result of an operation Speech to Text Recognition by its ID (Python)?

I'm trying to get response of successfully executed long_running_recognize request (speech_v1p1beta1) by its ID. I know how to get this job done from console by using SDK gcloud ml speech operations ...
0
votes
1answer
26 views

XAMPP on Catalina - Can't connect to local MySQL server through socket '/opt/lampp/var/mysql/mysql.sock' [closed]

i installed xampp to make a local website. i finished the website and tried to export the db to switch to production and i noticed that the DB in php my admin seemed to be empty ( which couldn't be ...
0
votes
0answers
15 views

/var/tmp/crontab-flush process 100 % load of cpu all the time. It's a malware, what can I do? [closed]

I have noticed this weird process, it's taking 100 % of cpu usage all the time. It must be some kind of malware. But before I delete the file, I want to inspect on it and try to detect other infected ...
0
votes
0answers
20 views

reverse proxy apache for whole domains

I ma trying to set up an apache reverse proxy to redirect HTTP flow to each of my domains. /etc/apache2/sites-enabled/ contains one configuration file per domain. Each configuration file is like the ...
0
votes
1answer
21 views

Postfix configuration to send emails from localhost

I want to configure localhost to send emails via postfix server, I do this for testing my solution of setup Docker with Wordpress (with solution found on internet email was not working, also curl but ...
1
vote
1answer
41 views

How does reduced redundancy storage (RRS) fit in S3 storage

This is a highy theoretical question as I am trying to get familiarized with S3 storage classes. The storage classes page in AWS docs does not mention RRS at all. RRS has its own page in AWS docs. The ...
0
votes
3answers
87 views

Website redirection intermittently work in Firefox but not work at all in IE

After few try an error in website redirection, I manage to perform website redirection but it intermittently works in Firefox but not work at all in IE. I manage to clear all cache and retry in ...
-4
votes
0answers
19 views

Program for ubuntu password prompt [closed]

Does anyone know a program or bash script for asking for your password repeatly until you enter the right password can't exit the prompt by pressing ctrl + z, but can disconnect when using ssh ? (...
-1
votes
1answer
40 views

proper way to start software at boot?

I am so outdated. I not designed system start/stop boot scripts since the "#_something" days. I have an app based on docker compose that I need to start at boot and stop before shutdown. what is ...
1
vote
1answer
28 views

Debian 9 does not find AAAA record for IPv6-only DNS names

I have an AAAA-only DNS name: superdns.cyberfusion.cloud. Using nslookup without options on Debian 9, I get No answer. Using nslookup without options on Ubuntu, I get the correct answer (AAAA record). ...
0
votes
0answers
7 views

Getting 502 Bad Gateway from nginx which I removed

I tried to improve the loading of my website by enabling brotli compression on Ubuntu 18 LTS, so I run theese commands from some tutorial: sudo apt-add-repository -y ppa:hda-me/nginx-stable sudo apt-...
0
votes
0answers
8 views

Making /dev/dri/renderD128 available to a Xen DomU

I have a program that wants to use /dev/dri/renderD128 (to use OpenGL to render some images, via EGL and libgbm). I had that device on my Dom0, but I want to use it from one of the DomU. I was hoping ...
0
votes
1answer
17 views

ssmtp not sending emails (gmail)

I would like to use ssmtp on Raspbian Buster to send emails. I have configured /etc/ssmtp/ssmtp.conf as followed: # # Config file for sSMTP sendmail # # The person who gets all mail for userids < ...
-1
votes
1answer
23 views

Is there any risk to change www-data to root in Nginx.conf?

I have encountered a permission error serving my files so I changed the user www-data; to user root; in the nginx.conf file. Is there any risk to do so?
0
votes
1answer
24 views

Are stoppped EC2 instances removed from the instance list at some point of time?

If I stop an EC2 instance, for how long will it 'live' in the stoppped state? Is there a limit of days after which AWS removes it from the instances list? I checked the AWS docs, in particular this ...
2
votes
0answers
36 views

Postfix server sends mails properly, but not recive them

I set up my mail server with Webmin/Virtualmin with Postfix couple days ago. Server lives on EC2 instance. Everything was working just fine. Mails were being send and I recived them properly as well. ...
1
vote
3answers
78 views

LVM2 vgreduce unknown physical volume from root logical volume CentOS8

I have a removable disk in my CentOS8, but I can't reduce the volume group: [root@localhost ~]# vgs WARNING: Couldn't find device with uuid 3GDhRA-KZjA-iDum-8Ut0-s9s0-NnW2-4QQEUv. WARNING: VG cl ...
0
votes
1answer
13 views

Billing access denied, tho Ive granted all access to an IAM user

I currently cant watch or edit Billing (through IAM User Access to Billing Information) because the AWS console says that I dont have permissions. I am the only user in the account, with a full IAM ...

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