可以接收电子邮件，但无法让服务器发送电子邮件

Question

我有一个脚本应该让服务器发送电子邮件。我的问题是，我可以向我的服务器发送电子邮件并接收该电子邮件，但服务器不会发送电子邮件。只会通过 squirrelmail 接口发送电子邮件。我的 MX 记录为：mail.mydomain.com 和 mydomain.com 以及 mail.mydomain.com 的 A 记录

下面是应该让服务器发送电子邮件的脚本。

<?php
$fileatt = "Reports/$previousreport/$previousreport.pdf"; // Path to the file 
$fileatt_type = "application/pdf"; // File Type 
$fileatt_name = "$previousreport"; // Filename that will be used for the file as the attachment 

$email_from = "example.com"; // Who the email is from
$email_cc = "[email protected]"; 
$email_subject = "$theData3"; // The Subject of the email 
$email_message = "<br>";
$email_message .= "<br>"; // Message that the email has in it 

$email_to = "$theData2"; // Who the email is to 

$headers = "From: ".$email_from. 
$headers = "\r\nCc: ".$email_cc;


$file = fopen($fileatt,'rb'); 
$data = fread($file,filesize($fileatt)); 
fclose($file); 

$semi_rand = md5(time()); 
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x"; 

$headers .= "\nMIME-Version: 1.0\n" . 
"Content-Type: multipart/mixed;\n" . 
" boundary=\"{$mime_boundary}\""; 

$email_message .= "This is a multi-part message in MIME format.\n\n" . 
"--{$mime_boundary}\n" . 
"Content-Type:text/html; charset=\"iso-8859-1\"\n" . 
"Content-Transfer-Encoding: 7bit\n\n" . 
$email_message .= "\n\n"; 

$data = chunk_split(base64_encode($data)); 

$email_message .= "--{$mime_boundary}\n" . 
"Content-Type: {$fileatt_type};\n" . 
" name=\"{$fileatt_name}\"\n" . 
//"Content-Disposition: attachment;\n" . 
//" filename=\"{$fileatt_name}\"\n" . 
"Content-Transfer-Encoding: base64\n\n" . 
$data .= "\n\n" . 
"--{$mime_boundary}--\n"; 

$ok = @mail($email_to, $email_subject, $email_message, $headers); 

if($ok) { 
echo "<font face=verdana size=2><center>You file has been sent<br> to the email address you specified.<br> 
Make sure to check your junk mail!";

} else { 
die("Sorry but the email could not be sent. Please go back and try again!"); 
} 
?>

我不断检查 MX 记录，但无法找出问题所在。

Answer 1

检查日志文件中是否有任何提示（/var/log/messages 或 /var/log/maillog）。

您能否更好地格式化您的代码，以帮助我了解您到底想要实现什么目标。

我怀疑问题出在 MX 上，更可能是编码问题（$email_from 变量的地址格式不正确）