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Return Path FAQ
What is a Return-Path?
The return path of an email is the address used during the SMTP conversation in the SMTP MAIL FROM command.
Can the Return Path be different from the From header?
Yes, the return path can be different from the from header.
Why would I want to use a different Return-Path, and From header?
Usually you would use a different return path value, and from header
Is Return-Path a header that I can set?
No, most smtp servers would ignore the header if you set it. If you want to set the return path for an email your email sending software must support this feature.
Why do I sometimes see a Return-Path header in my emails?
Some SMTP email servers (such as sendmail, qmail, postfix) will take the address the SMTP client used in the SMTP MAIL FROM command, and put the value in a header called Return-Path:
How do I set the return-path address using ColdFusion?
CFMAIL as of version 6.1 supports an attribute called failto, also supports this feature, and runs on ColdFusion 4.5 and up.
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