Set Hostname in Centos 7 Rumi, May 11, 2019 CentOS 7 only allows Fully Qualified Domain Names (FQDN’s). Acceptable values include lower-case letters a to z, numbers 0 to 9, the period, and the hyphen, and between 2 and 63 characters. At the console, type: hostnamectl set-hostname my.new-hostname.server NOTE: Replace my.new-hostname.server with your chosen hostname. Check the Hostname hostnamectl Continue Reading
SOLVED Zimbra 8.6 HTTP ERROR 404 Problem accessing /public/error.jsp. Reason: /public/error.jsp Rumi, May 10, 2019 Do a quick search under the usual jetty folders: find /opt/zimbra/jetty/ -type f -name *jsp -mtime -30 If you find files like: /opt/zimbra/jetty/webapps/zimbra/js/zimbra/csfe/XZimbra.jsp /opt/zimbra/jetty/webapps/zimbra/public/Ajax.jsp you’re actually hacked. Unlike the previous “zmcat” and “dblaunchs” that actually exploit the vuln and load some sh*t this looks like a bad childish attack. It… Continue Reading
SOLVED Debian Wheezy Letsencrypt error /opt/eff.org/certbot/venv/bin/python: No module named pip.__main__; ‘pip’ is a package and cannot be directly executed Rumi, May 10, 2019 My case and solution: Debian 7.11 wheezy python2.7 python-pip NOT installed My steps: #ln -fs /usr/lib/python2.7/plat-x86_64-linux-gnu/_sysconfigdata_nd.py /usr/lib/python2.7/ #wget https://raw.githubusercontent.com/certbot/certbot/75499277be6699fd5a9b884837546391950a3ec9/certbot-auto #chmod +x ./certbot-auto #certbot-auto renew –no-self-upgrade it download some files and works fine. Src: https://github.com/certbot/certbot/issues/6824 Continue Reading
Fixing Rainloop Can’t get message list error Rumi, April 29, 2019 For large mailbox when you have some mailbox having more than 100k mails in inbox, for those account you are getting error “Can’t get message list”. Here I got my fix, however can’t guarantee it works for you as well. My Rainloop version is 1.11.3. Following settings might help to… Continue Reading
Installing a Comodo SSL on Zimbra using CLI Rumi, April 14, 2019April 14, 2019 1. Get the bundle from Comodo in crt format, or sometimes like a zip file. 2. Place the bundle on your Zimbra mailbox server. You should receive, or download, the next files: AddTrustExternalCARoot.crt COMODORSAAddTrustCA.crt COMODORSADomainValidationSecureServerCA.crt my_domain_com.crt or since comodo is acquired by Sectigo, the updated zip might appear as below: Continue Reading
Google Doodle celebrates Pohela Boishakh Rumi, April 14, 2019 Over the years, it has become a key element of Pohela Boishakh celebrations. The world’s most popular search engine has created a doodle depicting the Mongol Shobhajatra procession to welcome Pohela Boishakh, the first day of the Bangla New Year. The doodle, featuring a tiger, has been on Google’s homepage… Continue Reading
Setup a Site to Site IPsec VPN With Strongswan and PreShared Key Authentication Rumi, March 25, 2019March 25, 2019 Today we will setup a Site to Site ipsec VPN with Strongswan, which will be configured with PreShared Key Authentication. After our tunnels are established, we will be able to reach the private ips over the vpn tunnels. Get the Dependencies: Update your repository indexes and install strongswan: $ apt… Continue Reading
Zimbra authentication without domain Rumi, March 20, 2019 In the admin interface go to Global Settings -> General Information -> Default domain and enter the name of your domain. Users in that domain can now login without the @domain part. Continue Reading
Xcode on my Mac Sierra (10.12.6) Rumi, March 14, 2019 You can get the correct version here at this URL: https://developer.apple.com/download/more/ to download a your version of Xcode you want. Specifically, get 9.2.1. This is the recent version that works with mac OS Sierra. Alternatively, this link works good too- https://xcodereleases.com/ Continue Reading
SCP Command Syntax Rumi, March 14, 2019 Before going into how to use the scp command, let’s start by reviewing the basic syntax. The scp utility expressions take the following form: scp [OPTION] [user@]SRC_HOST:]file1 [user@]DEST_HOST:]file2 OPTION – scp options such as cipher, ssh configuration, ssh port, limit, recursive copy ..etc [user@]SRC_HOST:]file1 – Source file. [user@]DEST_HOST:]file2 – Destination… Continue Reading