Hi,
SMPT host name and smtp_port can be changed in your php.ini file which stores all setting for your installation of PHP interpreter.
WBR,
ViArt Support Team
customer or me cannot receive any mail payment or invoice of pucshase , and i got this error
PHP Warning: mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini