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(PHP 4, PHP 5)

getmxrr — Get MX records corresponding to a given Internet host name


bool getmxrr ( string $hostname , array &$mxhosts [, array &$weight ] )

Searches DNS for MX records corresponding to hostname .



The Internet host name.


A list of the MX records found is placed into the array mxhosts .


If the weight array is given, it will be filled with the weight information gathered.

Return Values

Returns TRUE if any records are found; returns FALSE if no records were found or if an error occurred.


Note: This function should not be used for the purposes of address verification. Only the mailexchangers found in DNS are returned, however, according to » RFC 2821 when no mail exchangers are listed, hostname itself should be used as the only mail exchanger with a priority of 0.

Note: This function is not implemented on Windows platforms. Try the » PEAR class » Net_DNS.