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I have corresponding problem. I'm sending newsletters by PHP scripts. E-mail's headers are :

Return-Path: <no-reply@vojta.cz>
From : No Reply <no-reply@vojta.cz>
Reply-To : Vojtech Tuma <me@vojta.cz>

What heppen if this e-mail is sent to mailbox where is set auto-answer (I'm on vacation blah blah...) Which address from header will be used for auto-anser as "To" header parametr ?

Thanks.

yustme
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    http://stackoverflow.com/questions/1235534/what-is-the-behavior-difference-between-return-path-reply-to-and-from – j08691 May 07 '14 at 13:56
  • I have already read that article. But it isn't exactly solving my problem. I don't know if auto-answer is made by server or client side. If it be only on server side I hope that Return-Path should be used. – yustme May 07 '14 at 14:10

2 Answers2

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It depends on how the receiver's email client is configured. If their client is configured to ignore Reply-To, it will get sent to no-reply@vojta.cz, otherwise it will send to me@vojta.cz.

You literally have no control over this.

Tripp Kinetics
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  • Thanks. So must address no-reply@vojta.cz exists ? I have about 900 different domains, which are using the newsletter. – yustme May 07 '14 at 14:07
  • Only if you care about what email goes to it. If you don't care, it really doesn't matter if it bounces. I suspect out-of-office messages belong to the "I don't care" category. – Tripp Kinetics May 07 '14 at 14:14
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When you get an Auto Answer You'll get the following headers: X-Autoreply: yes Auto-Submitted: auto-replied

Standard wise It'll go back to the Reply-To e-mail.

Please check RFC-3834 - Recommendations for Automatic Responses to Electronic Mail Item 3.1.2 .

Community
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  • It will require to read incomig messages in "no-reply@vojta.cz" mailbox? I just want to throw away automated answers, but kept the option to answer on newsletter in mail client by clicking "Reply" button. – yustme May 07 '14 at 14:18