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Re: [qmailtoaster] Email forwarding + SPF records.

Martin Waschbuesch
Wed, 03 Feb 2010 09:19:34 -0800

Hi Unai,

Am 03.02.2010 um 12:00 schrieb Unai Rodriguez:

> Dear CJ,
> 
> Thank you so much for your response.
> 
> I am not sure if I made clear that the server throwing the error is the 
> "forwarder" which is not under my control (that is the one hosted on an ISP 
> -- bluehost.com).
> 
> I only control the 3rd "entity" (recipient):
> 
> [SENDER] -> [FORWARDER] -> [RECIPIENT]
> (anyone) -> (bluehost)  -> (u-journal.org or gmail.com)
> 
> What I do not understand is why if the RECIPIENT is GMAIL everything is fine 
> while if it is U-JOURNAL.ORG FORWARDER complains about the SPF record on 
> SENDER?
> 
> Thank you so much again.
> 
> unai

in order for this scenario to work, either of the following must be true for 
the FORWARDER:
- it implements SRS to rewrite headers
- its IP address is listed in the SPF record of the SENDER as being allowed to 
send in SENDER's name.

If none of the above is true, then the difference between Gmail and the other 
recipient might be how strict they regard SPF failure / problems.
It might only be 'warn' for Gmail while it is 'fail' for others.

Martin
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