邮件服务商(ESP)邮件退信二十二:信封发件人和信头发件人不匹配

邮件作为商务沟通的一个重要的工具,世界第一封邮件诞生于1971年,中国第一封邮件诞生于1998,中国邮件已发展30年。不管互联网如何变化,邮件还是商务沟通最重要的工具之一。

然而,企业在邮件的收发及达到率等各个指标上,还是缺乏专有的人才。有的企业采用第三方的邮件服务商、有的自己搭建邮件服务器。然而,因为互联网垃圾邮件泛滥,导致各种反垃圾邮件技术问世。使得,我们正常的邮件发送受阻。邮件营销人员及相关技术人员,只有充分的了解邮件各种技术,及邮件服务商邮件退信的原因,才能更好的发送邮件。

邮件服务商(ESP)邮件退信二十二:信封发件人和信头发件人不匹配

 

1. 如何理解 mail from, from, reply-to?

mail_from: 信封上的发件人, 由「前缀@域名」组成. 此域名就是所谓的发信域名

from: 信件内容里的发件人. 用户可以任意填写, 支持别名显示.

「代发」是否出现, 就是看 mail_from 和 from 是否相同.

reply-to: 信件回复的收件人. 用户直接回复邮件时, reply-to 就是默认的收件人. 如果用户不指定它, from 就是默认的收件人.

2.邮件中为什么会显示代发?

邮件中存在 mail_from 和 from 两个概念, 如果这两者不一致, 则 ESP 会在客户端上显示代发, 用以提醒收件人两者的不同.

显示代发如下图:

邮件代发1

from = 'test@liubida.cn'
mail_from = '98a47302-beee-11e4-a3b9-00163e12fa99@push.liubida.cn'

如果两者一致, 则不会显示代发, 如下图:

代发2

当然, 有些 ESP 并不会要求这两者完全一致, 而是只要求两者的域名相同 ( 比如 QQ 邮箱 ) .

如果碰到严苛的 ESP ( mail_from 和 from 必须完全一致才不显示代发, 比如网易邮箱 ), 那也只能爱莫能助了.

备注:目前很少有ESP服务商因为mail from,和from 字段不同而导致拒收的。

 


mailgun对显示代发的回复

mailgun对显示代发的回复
 

 

 

系列文章:
邮件服务商(ESP)邮件退信一:标记为垃圾邮件!
邮件服务商(ESP)邮件退信二:硬反弹(Hard Bounce)
邮件服务商(ESP)邮件退信三:软反弹(Soft Bounce) 
邮件服务商(ESP)邮件退信四:发送邮件IP被ESP列入黑名单
邮件服务商(ESP)邮件退信五:收件人邮箱已满
邮件服务商(ESP)邮件退信六:邮件标题包含垃圾邮件词汇
邮件服务商(ESP)邮件退信七:邮箱账户未激活
邮件服务商(ESP)邮件退信八:邮件内容包含垃圾邮件词汇
邮件服务商(ESP)邮件退信九:发送域被标记为垃圾邮件
邮件服务商(ESP)邮件退信十:邮件运营商被标记为垃圾邮件
邮件服务商(ESP)邮件退信十一:用户设置个人黑名单或者过滤器拒收
邮件服务商(ESP)邮件退信十二:发送的邮件内容大小超出ESP邮箱限制
邮件服务商(ESP)邮件退信十三:发送邮件服务器IP的发信频率超过ESP邮箱限制
邮件服务商(ESP)邮件退信十四:发件人域名的发信频率超过ESP邮箱限制 
邮件服务商(ESP)邮件退信十五:发件人的发信频率超过ESP邮箱限制 
邮件服务商(ESP)邮件退信十六:收件人域名已过期或者收件人已过期
邮件服务商(ESP)邮件退信十七:邮件群发包含过多用户
邮件服务商(ESP)邮件退信十八:收件人帐号被禁用(冻结、锁定、删除等)
邮件服务商(ESP)邮件退信十九:附件太大
邮件服务商(ESP)邮件退信二十:对某个ESP而言,发件人当天发送邮件累计达到一定的量,当天不再接受该发件人的邮件
邮件服务商(ESP)邮件退信二十一:发信IP位于一个或多个RBL黑名单里
邮件服务商(ESP)邮件退信二十二:信封发件人和信头发件人不匹配
邮件服务商(ESP)邮件退信二十三:不允许发送的附件类型

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