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Email ports POP3 – port 110 IMAP – port 143 SMTP – port 25 HTTP – port 80 Secure SMTP (SSMTP) – port 465 Secure IMAP (IMAP4-SSL) – port 585 IMAP4 over SSL (IMAPS) – port 993 Secure POP3 (SSL-POP) – port 995

Uploading/Downloading files through your *nix console. Connection: $ sftp user@domain.com Available commands: ls list files pwd show which directory you are in on the server side lpwd show which directory you are in on the client side cd DIRECTORY change current location to DIRECTORY on the server side lcd DIRECTORY change current location to DIRECTORY [...]

How to install Redmine on BlueHost under a subdomain.  Redmine is a popular project management software based on RubyOnRails. BlueHost is a shared hosting provider but allows you to use SSH access to your account. To enable SSH open a support ticket and send them a scan of your ID. I will give you rough [...]

The ClamAV scanning feature can be disabled in the qmail’s simcontrol configuration file. This will not disable the clamav daemon but will disable active scanning. edit: /var/qmail/control/simcontrol there should be text like this: :clam=yes,spam=yes,spam_passthru=yes,attach=.vbs:.lnk:.scr:.wsh:.hta:.pif what we need to do is to replace clam=yes with clam=no. If you don’t have this text insert it. Next we [...]

Using vpopmail you can easily add domains and users to your qmail configuration. To add a domain: $ vadddomain  domainname.tld To remove a domain and all its mailboxes: $ vdeldomain domainname.tld To add a user mailbox on domainname.tld: $ vadduser username@domainname.tld  userpassword To remove a mailbox on domainname.tld: $ vdeluser username@domainnaime.tld: You can find more [...]

If you wondered how to change permissions recursively on files or folders only, here is the how to using the find command. Change permissions recursively to directories only: find /path/to/folder    -type d    -exec  chmod 0755   {}   \; Change permissions recursively to files only: find /path/to/folder    -type f    -exec  chmod [...]

If  your website is under contruction and you want to allow access just to certain IP numbers, placing the following code in the .htaccess  file, in the website root directory, you can block access to everyone except the IP numbers you specify. order deny,allow deny from all allow from 76.33.193.98 allow from 84.23.122.204 allow from 93.34.133.203 [...]

We often need to download a directory from a ftp server to a local computer. You can do this using wget and its -r parameter.  The command would be: wget -l 30 -r ftp://user:pass@host/some_directory/ -l  sets the level depth. default value is 5 layers. i put 30 to be sure wget gets the whole tree

File and Folder permissions on *unix like systems.

Vi is a Unix/Linux terminal based text editor. Despite its overhelming features it is still popular among Unix administrators. I’ll mention some of the most used commands.