本机调试可以网上的不行

yahen123

A PHP Error was encounteredSeverity: Warning
Message: fsockopen() [function.fsockopen]: unable to connect to smtp.tom.com:25 (Connection refused)
Filename: libraries/Email.php
Line Number: 1342

A PHP Error was encounteredSeverity: Warning
Message: fwrite(): supplied argument is not a valid stream resource
Filename: libraries/Email.php
Line Number: 1481

A PHP Error was encounteredSeverity: Warning
Message: fgets(): supplied argument is not a valid stream resource
Filename: libraries/Email.php
Line Number: 1502

A PHP Error was encounteredSeverity: Warning
Message: fwrite(): supplied argument is not a valid stream resource
Filename: libraries/Email.php
Line Number: 1481

A PHP Error was encounteredSeverity: Warning
Message: fgets(): supplied argument is not a valid stream resource
Filename: libraries/Email.php
Line Number: 1502

A PHP Error was encounteredSeverity: Warning
Message: fwrite(): supplied argument is not a valid stream resource
Filename: libraries/Email.php
Line Number: 1481

A PHP Error was encounteredSeverity: Warning
Message: fgets(): supplied argument is not a valid stream resource
Filename: libraries/Email.php
Line Number: 1502

Hex

错误消息很明显，对方阻止你链接他的 SMTP 服务器，这个就没办法了，任命吧，要不就换其他 SMTP 服务器。

还一种可能，服务器不允许 PHP 连接其他服务器，总之是服务器环境问题，呵呵。