User Arul Selvan

44 votes

How do I reattach to Ubuntu Server's 'do-release-upgrade' process?

answered Dec 3, 2012 at 0:05

11 votes

Rate limiting with UFW: setting limits

answered Aug 26, 2012 at 14:47

7 votes

Relay host based on destination MX record

answered Jan 29, 2015 at 16:01

7 votes

Why cd does not change current directory in crontab?

answered Feb 19, 2015 at 19:37

5 votes

Is it really secure to connect to a server by SSH from hotels during a journey?

answered Jun 27, 2015 at 14:14

5 votes

Accepted

Mail sent from my POSTFIX mail server goes to gmail spam

answered Jan 20, 2015 at 2:13

5 votes

Accepted

how to find proces which is pinging localhost

answered Jul 17, 2015 at 1:28

4 votes

Accepted

Disable two step SSH authentication for trusted addresses

answered Mar 22, 2015 at 14:18

3 votes

redirect permanent http to https

answered Feb 4, 2015 at 14:04

3 votes

Postfix - How to prevent external clients from using my server as a relay?

answered Feb 5, 2015 at 14:04

3 votes

postfix NOQUEUE: reject: RCPT from 454 4.7.1 Relay access denied

answered Mar 26, 2016 at 15:52

2 votes

postfix relayhost based on the mail recipient

answered Feb 4, 2017 at 15:07

2 votes

Accepted

Iptables time-based rules having no effect - Gateway with 2 NICs

answered Jul 20, 2015 at 13:10

2 votes

How do I change my default shell on a domain account

answered Nov 15, 2015 at 14:08

2 votes

Get a website's host machine's OS/server software without access to the server

answered Jan 19, 2015 at 16:22

2 votes

Forward mail to "root" user even if RCPT TO field is different? (Postfix)

answered Jan 24, 2015 at 17:09

2 votes

How to run docker container with bash shell?

answered Apr 3, 2021 at 16:35

1 vote

Tomcat webapps eating all the memory up

answered Nov 7, 2015 at 21:12

1 vote

Accepted

Mounting fails with fstab

answered Jan 29, 2015 at 16:40

1 vote

Accepted

Write sitemap.xml to java webapp root directory permission denied

answered Jan 19, 2015 at 23:21

1 vote

Accepted

Is it possible to deterministically trace how port 80 is forwarded and where the configuration is on a given system?

answered Jun 28, 2015 at 11:15

1 vote

Accepted

Permission Denied (Publickey) from OS X to Ubuntu

answered Apr 3, 2015 at 14:11

1 vote

How to see the java process that is using a port

answered Apr 7, 2015 at 15:16

1 vote

Linux Iptables writing new rule for limit a DoS Attack

answered Aug 7, 2015 at 13:33

1 vote

Best way to disable SSH for all users?

answered Feb 4, 2017 at 16:20

1 vote

Postfix bounces on user unknown alias (`"|exit 67"`) instead of rejecting mail

answered Oct 30, 2016 at 17:31

1 vote

Disable health-check logging in AWS ELB Django Application

answered Mar 24, 2019 at 2:11

1 vote

How to check: variable of function is it path to a folder or file on a remote server?

answered Apr 28, 2019 at 16:33

0 votes

Limited to 1024 file descriptors [relates to ulimit -n]

answered Dec 29, 2016 at 1:09

0 votes

Accepted

Configure smtp relay for a domain

answered Apr 14, 2017 at 16:44

Stack Exchange Network

42 Answers

How do I reattach to Ubuntu Server's 'do-release-upgrade' process?

Rate limiting with UFW: setting limits

Relay host based on destination MX record

Why cd does not change current directory in crontab?

Is it really secure to connect to a server by SSH from hotels during a journey?

Mail sent from my POSTFIX mail server goes to gmail spam

how to find proces which is pinging localhost

Disable two step SSH authentication for trusted addresses

redirect permanent http to https

Postfix - How to prevent external clients from using my server as a relay?

postfix NOQUEUE: reject: RCPT from 454 4.7.1 Relay access denied

postfix relayhost based on the mail recipient

Iptables time-based rules having no effect - Gateway with 2 NICs

How do I change my default shell on a domain account

Get a website's host machine's OS/server software without access to the server

Forward mail to "root" user even if RCPT TO field is different? (Postfix)

How to run docker container with bash shell?

Tomcat webapps eating all the memory up

Mounting fails with fstab

Write sitemap.xml to java webapp root directory permission denied

Is it possible to deterministically trace how port 80 is forwarded and where the configuration is on a given system?

Permission Denied (Publickey) from OS X to Ubuntu

How to see the java process that is using a port

Linux Iptables writing new rule for limit a DoS Attack

Best way to disable SSH for all users?

Postfix bounces on user unknown alias (`"|exit 67"`) instead of rejecting mail

Disable health-check logging in AWS ELB Django Application

How to check: variable of function is it path to a folder or file on a remote server?

Limited to 1024 file descriptors [relates to ulimit -n]

Configure smtp relay for a domain