Could not instantiate mail function

[catding]

there is some problem these days when I sending mail from whmcs, it often says"Could not instantiate mail function", and sometime there is no such problem, but there is no such problem when I was on my dedi server. I'm using postfix as the mail server.

 

 

I use WHMCS cron.php and pop.php to check emails periodly.

using croner like follows.

 

0 */12 * * * /usr/local/php/bin/php -q /home/wwwroot/vo/member/admin/cron.php

*/6 * * * * /usr/local/php/bin/php -q /home/wwwroot/vo/member/pipe/pop.php

 

but can't send email with cron.

 

I found that the pop.php and cron.php of WHMCS need some right to execute mail() under cron.

but the system don't provide such rights, so can't send email with cron.

 

does any body has similar problem?

 

how to fix it?

[WHMCS John]

This message usually occurs when using the PHP Mailer function to send email and the script receives a failure when using the mail() function. I would advise trying to use the SMTP method in Setup -> General Settings -> Mail as the PHP Mail function cannot give more descriptive errors than this.

[catding]

Is there any error log where we can get the exact mail() problem?

[catding]

and when execute cron.php or pop.php like this:

/usr/bin/php /home/wwwroot/vpntech.info/member/admin/cron.php

there is an error:

sh: -t: command not found

 

How to fix it?