Linux, Windows, Security, Programming, Network Tutorials
SMTP or Simple Mail Transfer Protocol is used to transmit emails between clients, receivers, and email servers. SMTP service generally provided via different ports for network communication and transmission. IMAP and POP3 are other protocols used for email transmission but they are mainly used by email clients where SMTP is used for email servers. In … Read more
Email is a popular way of communication in private life and business life. Emails can be sent to multiple recipients in different ways. To, CC (Carbon Copy), BCC (Blind Carbon Copy) can be used to specify recipients in different ways. BCC (Blind Carbon Copy) is a very useful feature for emails. To We have to … Read more
sendmail is a mail transfer agent (MTA) used to send emails between computer systems by using simple mail transfer protocol (SMTP) . Sendmail project can be accessed from <a href=”http://www.sendmail.org”>www.sendmail.org</a> <h1>Install On Ubuntu, Debian, Mint, Kali</h1>sendmail tool is provided by different packages on Ubuntu, Debian,Mint, Kali ordebbased distributions. In this case, we will install the package namedpostfix. … Read more
Tcpdump is everyday tool used by system and network administrator. We generally look simple use cases like host, port and protocol filter for tcpdump . In this tutorial we will look how to filter host, port and protocol in tcpdump. But keep in mind that tcpdump will requires administrator or root privileges. We can use root account … Read more
OpenSSL provides different features and tools for SSL/TLS related operations. s_lient is a tool used to connect, check, list HTTPS, TLS/SSL related information. Simply we can check remote TLS/SSL connection with s_client . In these tutorials, we will look at different use cases of s_client . Check TLS/SSL Of Website The basic and most popular use … Read more
Linux has a lot of tools, services, and applications related to email. An email has a different architecture than standard client-server. We will look at a command-line based mailing application named mailx. mailx more advanced version of the mail tool. mailx command supports the MIME, IMAP, POP3, SMTP, and S/MIME protocols and based Berkeley Mail 8.1 mail … Read more