


Solve the problem that 163/sohu/sina cannot receive emails sent by the PHP MAIL function_PHP Tutorial
// multiple recipients
$to = 'aidan@example.com' . ', '; // note the comma
$to .= 'wez@example.com';
// subject
$subject = 'Birthday Reminders for August';
// message
$message = '
Here are the birthdays upcoming in August!
Person | Day | Month | Year |
---|---|---|---|
Joe | 3rd | August | 1970 |
Sally | 17th | August | 1973 |
';
// To send HTML mail, the Content-type header must be set
$headers = 'MIME-Version: 1.0' . "rn";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "rn";
// Additional headers
$headers .= 'To: Mary
$headers .= 'From: Birthday Reminder
$headers .= 'Cc: birthdayarchive@example.com' . "rn";
$headers .= 'Bcc: birthdaycheck@example.com' . "rn";
// Mail it
mail($to, $subject, $message, $headers);
查看sendmail的maillog,发现奇怪的内容。
Mar 1 11:28:03 shaohui.org sendmail[27526]: n213S1Xc027524: to=
但是,如果我使用Linux Shell 的mail命令是可以发送成功的,不过多加了一条-f 参数伪造发件人。这是唯一的不同,于是maillog 的其中一个字段ctladdr显示也不一样。不再是apache用户,我怀疑163等国内的邮件服务提供商,把所有的apache的用户的邮件当成垃圾邮件处理掉了。
Feb 25 23:44:59 shaohui sendmail[13067]: n1PFixH4013067: to=shaohui_1983@163.com, ctladdr=contact@shaohui.org (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30869, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (n1PFixdx013068 Message accepted for delivery)
根源找到,于是问题就很好解决了,查一下php的手册,发现mail函数原来也是可以伪造发件人的。
bool mail ( string $to , string $subject , string $message [, string $additional_headers [, string $additional_parameters ]] )
在第六个参数additional_parameters使用额外的参数"-f sender_addr@mydomain.com", 问题就解决了。

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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