[kmail2] [Bug 411204] New: With two email accounts, SPF sees emails as being from the 'Set as Default' account, leading to authentication/DMARC problems when sending from other account

[Peter Wibberley]

https://bugs.kde.org/show_bug.cgi?id=411204

            Bug ID: 411204
           Summary: With two email accounts, SPF sees emails as being from
                    the 'Set as Default' account, leading to
                    authentication/DMARC problems when sending from other
                    account
           Product: kmail2
           Version: 5.12.0
          Platform: Neon Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: p.wibberley at btinternet.com
  Target Milestone: ---

SUMMARY

If there are two email accounts, Sending Policy Framework seems to think emails
are sent always from the 'Set as Default' account, leading to
authentication/DMARC problems when sending from other account.   

STEPS TO REPRODUCE

1.Under Accounts.Sending, set up two SMTP Sending Accounts with different ISPs 

2.One of the accounts will be 'Set as Default'

3.Send a message to a Gmail account with each Account.  

4. Under Account.Sending swap 'Set as Default' to the other account.  

OBSERVED RESULT

The email from the  Sending Account which is 'Set as Default' will be
delivered; the email from the other account will fail on DMARC policies.   

When the 'Set as Default' is swapped to the other account, the account from
which the email is successfully delivered and the account from which the email
is rejected will swap over.     

EXPECTED RESULT

Emails from both accounts should be sent and not rejected. 

SOFTWARE/OS VERSIONS

KDE Plasma Version: Linux/KDE neon Plasma LTS Edition 5.12, Release 18.04
Kernel: 4.15.0-58-generic 64-bit 
KDE Frameworks Version: 5.61.0
Qt Version: 5.12.3
Kmail 5.12.0 ( Version 4:19.08.0-0xneon+18.04+bionic+build33 from
ubuntu-bionic-universe (KDE neon Plasma LTS) )

ADDITIONAL INFORMATION

A record in a "mail not deliverered message" was: 

"Received-SPF: softfail (transitioning domain of sa-prd-fep-014.btinternet.com
does not designate 74.208.4.204 as permitted sender)".  

Here, 74.208.4.204 is an IP address belonging to 1&1, which was the service
provider for the email account which was 'Set as Default'.  

I am not sure whether this is a duplicate of Bug 393185, which is marked as
"Resolved Not a Bug".  If so, it is not clear why this is not a bug, as it
makes the  account other than the default account almost unusable for sending
emails. 

Thanks and regards

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