The mailing list for listmasters using Sympa

["Stefan Hornburg (Racke)" <address@concealed>]

On 21/02/2022 14:40, Silvers, Tim wrote:
> Hi. We recently experienced a Sympa service crash due to receiving a bad 
> message. It appears to have been generated by from iPhone by a user 
> initiating Apple’s safe unsubscribe feature, as indicated by the header and 
> the body content [1].
>
> The email was removed from the spool and Sympa was able to be started. Before 
> removing the email, Sympa would simply silently fail to start, but there were 
> errors in the logs (see attached) and in the journalctl output. It was just 
> odd that SystemD in our CentOS 7 install didn’t indicate a failure.
>
> Anyway, I am providing these details because these “safe unsubscribe” 
> features are more pervasive now in many clients and I wonder if others have 
> experienced any issues due to these unsubscribe requests, and whether this is 
> something Sympa can address? It’s probably more of a fault of the clients 
> sending these and hitting mailing list services that handle unsubscribe 
> requests differently, so more of a client issue than a Sympa issue. But I 
> honestly don’t know why this message would crash Sympa. I will say that I can 
> open the email in Apple’s Mail client on my Mac, but Outlook crashes each 
> time I try to open it. Also, the email was sent to the service address with 
> no command. I thought Apple’s client might have attempted to send to the 
> listname-unsubscribe@domain address to request removal, as it is in the 
> headers of emails sent from Sympa, but alas, it did not.
>
> An interesting issue, for sure.
>
> [1] X-Mailer: iPhone Mail (19C63)
>
> Apple Mail sent this email to unsubscribe from the message =E2=80=9CFresh Eg=
>
> gs for Sale=E2=80=9D.=

It would be useful to see the crash error messages from the Sympa log ...

Regards
        Racke

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