Authentication SMTP to IP's SMTP - OR - How Does SBS's SMTP send a User Name / Password?

Friday, June 22, 2007

Hello Fellow Travelers,

I have run into quit a challenge with SBS and authenticating its
SMTP server with that of an IP's.

Everything was working fine until Cox sold to Suddenlink. If I
am understanding it correctly, Suddenlink has implemented both reverse DNS
lookup for e-mail and the 'My server requires authentication' (meaning their
SMTP server) to send e-mail.

Yes, you guessed it; in the past I have sent mail using my SMTP
server via the DNS lookup and received mail from the IP using POP. This
still works well until I run into a reverse DNS lookup; the e-mail is
bounced back. I figured I could overcome this by simply using Suddenlink's
mail server to both send and receive e-mail.

This has been 'no picnic' to change over. Yes, just changing
the way e-mail is handled with SBS's 'Configure E-mail and Internet
Connection Wizard' works great with Internet providers that don't require
authentication, but Suddenlink requires authentication to use their SMTP
server. How does one authenticate the Small Business Server's SMTP with
another SMTP server?

Thanks in advance for any help you can give.

Regards,

John A. Jackson

 

On the Properties of the SMTP connector where you enter the smarthost,
go to the Advanced tab and click Outbound Security, then enter either
basic authentication details or TLS according to the ISP's requirements.