What is difference between SMTP Port 25 and SMTP Port 587? What are the third party programs

[amarawalker]

Both ports do the same work but there is a major distinction. In port number 25 ID check is not necessary. But in port number 587, ID check must be done, thus, spam mails are blocked.

Sample SMTP Addresses
Google SMTP Address: smtp.gmail.com
Hotmail SMTP Address: smtp.live.com

The 3rd Party Programs

1. Outlook
2. Eudora
3. Kmail
4. Thunderbird
5. Evolution
6. Sylpheed

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Yahoo SMTP Server
SBCGlobal Outlook email settings