For example, water is composed of two hydrogen atoms bonded to one oxygen atom: the chemical formula is H2O. A compound can be converted to a different chemical composition by interaction with a second chemical compound via a chemical reaction.
To send mail using an Outlook.com account from an email program, see the Outlook.com SMTP server settings. 1  Outlook.com SMTP server name smtp-mail.outlook.com. 2  Outlook.com SMTP port 587. 3  Outlook.com SMTP encryption method TLS.
When POP3 clients send messages, the Exchange Server computer is communicating with an SMTP (Simple Mail Transfer Protocol) host. This requires access to TCP port 25. The Internet Mail Connector and the Internet Mail Service use TCP port 25 for inbound SMTP messages as defined by RFC-821.or the LDAP client to connect to the Exchange Server computer, the ports that need to be configured on the firewall are based purely on the authentication method in use. With Basic authentication, the Exchange Server computer listens on port 389.