mail server problem(postfix)

[Ankush Grover]

> 
> smtp_sasl_security_options = noanonymous, noplaintext

I did this but after that i started getting errors like this

mail postfix/smtp[1843]: 623A4BEE88: to=<ankush174 at yahoo.com>,
relay=mail.nextgenesolutions.com[216.251.43.97], delay=2,
status=deferred (Authentication failed: cannot SASL authenticate to
server mail.nextgenesolutions.com[216.251.43.97]: no mechanism
available)


> > > > The entries for passwd file are as
> > > >
> > > > ISP mailserver            username:password.

> > > Did you set "relayhost" in main.cf?
> 
> > I did not set relay host in main.cf .
> 
> You did now? If not your ISP's smart host will not be used as the
> standard relay. As an alternate you could use the transport map, but in
> your case with dynamic IP situation you always want your ISP's MTA for
> relaying.
> 

I did put my ISP smpt server as relay host in main.cf .How can I be
sure that my mail server is correctly authenticating with the ISP
server .

Thanks & Regards

Ankush Grover