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https://issues.apache.org/jira/browse/JAMES-3843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karsten Otto updated JAMES-3843:
--------------------------------
    Description: 
When the VacationMailet sends a vacation message, it uses the original 
recipient as envelope sender. However, RFC 5230 states
"5.1. SMTP MAIL FROM Address
The SMTP MAIL FROM address of the message envelope SHOULD be set to <>."
While we are technically OK because of the SHOULD, I do not see any real 
requirement to deviate from the recommendation. In fact, using the null sender 
can help prevent mail loops. So I propose we change the VacationMailet 
accordingly.

  was:
When the VacationMailet sends a vacation message, it uses the original 
recipient as envelope sender. However, RFC 5230 states
5.1. SMTP MAIL FROM AddressThe SMTP MAIL FROM address of the message envelope 
SHOULD be set to <>.
While we are technically OK because of the SHOULD, I do not see any real 
requirement to deviate from the recommendation. In fact, using the null sender 
can help prevent mail loops. So I propose we change the VacationMailet 
accordingly.


> VacationMailet should use null sender
> -------------------------------------
>
>                 Key: JAMES-3843
>                 URL: https://issues.apache.org/jira/browse/JAMES-3843
>             Project: James Server
>          Issue Type: Improvement
>          Components: Matchers/Mailets (bundled)
>    Affects Versions: master
>            Reporter: Karsten Otto
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> When the VacationMailet sends a vacation message, it uses the original 
> recipient as envelope sender. However, RFC 5230 states
> "5.1. SMTP MAIL FROM Address
> The SMTP MAIL FROM address of the message envelope SHOULD be set to <>."
> While we are technically OK because of the SHOULD, I do not see any real 
> requirement to deviate from the recommendation. In fact, using the null 
> sender can help prevent mail loops. So I propose we change the VacationMailet 
> accordingly.



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