Sometime setting up all the various email configurations can be extremly confusing, especially when you are unsure of which ports go with which type of configuration. The bellow list should hopefully remove some of that confusion for you.

Default Ports:	Server:	Authentication:	Port:
SMTP Server (Outgoing Messages)	Non-Encrypted	AUTH	25 (or 587)
Â	Secure (TLS)	StartTLS	587
Â	Secure (SSL)	SSL	465
POP3 Server (Incoming Messages)	Non-Encrypted	AUTH	110
Â	Secure (SSL)	SSL	995

So that takes care of the possible configuration option on our servers at Linuxweb. What if you want to check what teh configuration are for Gmail or Office365, bellow are te correct configurations for the ports and authetications.

Default Ports:	Server:	Authentication:	Port:
SMTP Server (Outgoing Messages)	smtp.gmail.com	SSL	465
Â	smtp.gmail.com	StartTLS	587
POP3 Server (Incoming Messages)	pop.gmail.com	SSL	995
Â	Please make sure, that POP3 access is enabled in the account settings. Login to your account and enable POP3. You also need to enable "less secure apps" (third party apps) in the Gmail settings: https://support.google.com/accounts/answer/6010255?hl=en

 

Default Ports:	Server:	Authentication:	Port:
SMTP Server (Outgoing Messages)	smtp.live.com	StartTLS	587
POP3 Server (Incoming Messages)	pop3.live.com	SSL	995

 

Default Ports:	Server:	Authentication:	Port:
SMTP Server (Outgoing Messages)	smtp.office365.com	StartTLS	587
POP3 Server (Incoming Messages)	outlook.office365.com	SSL	995
Â	Note: If the above settings are not working for your account, then login to the outlook web app, go to the "Settings" > "Options" > "Account" > "My Account" > "Settings for POP and IMAP Access".

 

Default Ports:	Server:	Authentication:	Port:
SMTP Server (Outgoing Messages)	smtp.mail.yahoo.com	SSL	465
POP3 Server (Incoming Messages)	pop.mail.yahoo.com	SSL	995