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# Net_SMTP::helo()

Net_SMTP::helo() -- Send the HELO command.

## Synopsis

    require_once 'NET/SMTP.php';

``mixed Net_SMTP::helo` (string $domain)`

## Description

Send the HELO command which is the first part of a mail-sending SMTP transaction where the Internet extender first tries to send mail.

## Parameter

string `$domain`

  The domain name to say we are.

## Return value

returns Returns a PEAR_Error with an error message on any kind of failure, or true on success.

## Throws

throws no exceptions thrown

## Note

This function can not be called statically.

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Net_SMTP::getResponse() | Up | Net_SMTP::identifySender()