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[QUOTE][u]Quote by: LewisR[/u][p]For authenticated SMTP, you'll need to reconfigure sendmail (or whatever MTA you're using. The PHP mail function merely passes the data to the external app; it has no provision for special SMTP functions.

For sendmail, you'll want to probably make entries to the following:

In your sendmail.cf (or .cf8), you'll want to be sure to use the DefaultAuthInfo directive, and set it to point to the file containing your authentication data, usually, /etc/sendmail/default-auth-info (but it can be anywhere in the filesystem).

The file default-auth-info needs to have something similar to the following:

AuthInfo:smtp.domain.com "U:username" "P=password"

Now, when you pass your mail to your gateway (the above configuration assumes you're using sendmail in "dumb" mode, simply passing mail to another SMTP server for processing), as defined by "smtp.domain.com" (you'll need this to be the gateway server defined in sendmail.cf as your smart relay host, via the DS directive), it will reference the username & password defined in default-auth-info, and your mail should go through.

HTH[/p][/QUOTE]

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