proxmox-mail-forward sends mails as .eml?

[devilkin]

Hi,

I've got some cron-jobs on my proxmox system to do verifications of things, and these run as root and mail me output. I've had a .forward with my mail address in the /root dir for this.

Since changing the notification system on my proxmox machine to use an external SMTP server (which is hosted on another device), I'm receiving the cron output as .eml files, which is fairly annoying.

Is there some way to disable this feature of proxmox-mail-forward, or a way to get rid of this behaviour? I just want Proxmox to send mails using my SMTP, but not hijack the entire system mail setup.

 

[Lukas Wagner]

Hi,

at the moment there is no way to configure this. We deliberately chose this approach to keep the original message intact and to avoid rewriting any headers (for instance: the SMTP server would likely reject the message if the "From" header does not match your email account, due to spam avoidance). Email clients like Thunderbird will display the enclosed message 'inline', making it fairly easy to read the enclosed mail.

However, I do see how this behavior could be annoying in Mail clients which lack this functionality. We will investigate alternatives to improve the user experience.

Thanks for the report!

 

[Lukas Wagner]

A fix for this is on our development mailing list. If this gets accepted and applied, this should be available via an update at some point in the future

https://lists.proxmox.com/pipermail/pve-devel/2023-December/061077.html

 

[devilkin]

Oh, wow. Thanks!

 

[leesteken]

While on the topic of .eml attachments: the Proxmox user mailing list also often, but not always, wraps mails in .eml, which cannot be shown by ProtonMail. Proxmox is not wrong and Proton should fix this, but it's the only mailing list where I encounter this issue regularly.

 

[Lukas Wagner]

A fix for this is on our development mailing list. If this gets accepted and applied, this should be available via an update at some point in the future

https://lists.proxmox.com/pipermail/pve-devel/2023-December/061077.html

This change is now available through the pve-no-subscription repository.

 

[fabian]

While on the topic of .eml attachments: the Proxmox user mailing list also often, but not always, wraps mails in .eml, which cannot be shown by ProtonMail. Proxmox is not wrong and Proton should fix this, but it's the only mailing list where I encounter this issue regularly.

a lot of mailing lists nowadays behave like this - the issue is if the sender's mail server has a policy in place that doesn't allow the mailing list server to send as the original sender (without tripping up the receiving mail server's spam checks). in that case, the mail needs to be wrapped in some fashion so that the actual mail that gets sent is from the list and sent *as the list* (as opposed to, from the list but sent as original sender).

 

[leesteken]

a lot of mailing lists nowadays behave like this - the issue is if the sender's mail server has a policy in place that doesn't allow the mailing list server to send as the original sender (without tripping up the receiving mail server's spam checks). in that case, the mail needs to be wrapped in some fashion so that the actual mail that gets sent is from the list and sent *as the list* (as opposed to, from the list but sent as original sender).

Thank you for explaining. I guess I'm just unlucky due to the combination of the Proxmox mailing list and ProtonMail web-client (which I wish they fixed).