当您从服务器发送大量电子邮件时，您受到限制 [英] Limits you hit when sending lots of email from your server

问题描述

从服务器发送大量电子邮件有哪些实际问题？收到该电子邮件的可能性是否与从g邮件或个人电子邮件帐户发送的情况相同，如果我例如只是盲目地调用PHP中的mail（）函数数万次一天？

（注意：您没有在这里帮助垃圾邮件发送者，这涉及到我正在考虑的未来链接共享网站的通知功能）

解决方案

虽然您可以在技术上每分钟发送数千封邮件，但实际上您一定要小心。 >

例如，你发送500封电子邮件给雅虎。如果有足够的人将您的消息标记为垃圾邮件，那么您发送给雅虎的任何电子邮件都将被标记为垃圾邮件或[散文]。许多isp的常规焦点或彻底拒绝来自服务器的邮件，例如RBL（实时黑洞列表）。如果您的邮件IP被放在其中一个列表中，您可以通过该ip再次发送电子邮件。用户非常精辟，并不需要很多投诉让您的邮箱在许多域名被阻止。

此外，由于您正在发送自动消息，因此有启发式方法用于确定是否向同一域上的许多用户发送相同的消息。这也增加了您的邮件被标记为垃圾邮件的机会。

这就是为什么干净的邮件从一些地址总是进入垃圾邮件框。他们的公司在发送可以被视为垃圾邮件的时候可能还不够细心。请谨慎行事。

http：// wiki .apache.org / spamassassin / AvoidingFpsForSenders

http://support.microsoft.com/kb/842851

http://www.blacklistedip.com/rbl_list.php

What kind of practical issues are there concerning sending tons of e-mail from a server? Will the likelihood of that e-mail being received be just the same as if it had been sent from g-mail or a personal e-mail account if I for example just blindly call the mail() function in PHP tens of thousands of times a day?

(note: you are not helping a spammer here, this relates to a notify feature I'm thinking about for a future link sharing site)

解决方案

While you may technically be able to send thousands of mails per minute, in reality you must be carefull.

Say you send out 500 emails to yahoo for example. if enough people mark your message as spam, soon, ANY email you send to yahoo will be marked as spam, or [BULK]. Many isp's routinely tar-pit or outright reject email from servers on lists such as RBL (the real-time black hole list). If your mail IP gets put on one of these lists, you can kiss sending email normally from that ip ever again goodbye. Users are very finicky and it doesn't take many complaints to get your mail ip blocked at many domains.

Also since you are sending automated messages, there are heuristics used to determine if the same message is being sent to many users on the same domain. This also increases the chance your mail will be marked as spam.

This is why clean emails from some addresses always go into the spam box. Their company may have not been careful enough when sending what could be perceived as spam. Proceed with caution.

http://wiki.apache.org/spamassassin/AvoidingFpsForSenders

http://support.microsoft.com/kb/842851

http://www.blacklistedip.com/rbl_list.php

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