Some mails are blank, but visible in "raw"

[swelljoe]

Some kinds of HTML email don't show up at all in the Read Mail module, though the contents can be seen with "View raw message".

An example email that exhibits this behavior: http://calport.com/open/email.txt

I don't see any clues, but I don't have any insight into the mail parser.

[jcameron]

Looks like a bug in parsing the message content. Could you forward one of these to me as an attachment, including all the headers?

[swelljoe]

The one I linked above is the only one I have (though maybe I can find one in my own mailbox, since it has been reported by multiple people).

[swelljoe]

I found another example in my own mailbox, and sent it to you.

[jcameron]

Looks like that example email has only HTML contents, but no text. There's an option on the preferences page that controls if the body can be shown as HTML or not .. the default is only text, which could cause this to show up as blank (at least, it did in my tests just now).

[swelljoe]

So...to end users that just looks like it doesn't work. I don't know what the right thing is, but this definitely aint it! ;-)

[swelljoe]

Are we concerned about dangerous content, or is there some other reason to not show HTML by default?

[swelljoe]

Is it safe to change the default on this to allow HTML? I guess we don't have mechanisms for blocking media until permitted (as Thunderbird does), so maybe tracking images are an issue...but, probably less of a problem than "email is blank".

[iliajie]

Is it safe to change the default on this to allow HTML?

It should be considerably safe.

I guess we don't have mechanisms for blocking media until permitted (as Thunderbird does),

We do.

.. so maybe tracking images are an issue...but, probably less of a problem than "email is blank".

Certainly.

2a3a1cd
virtualmin/Virtualmin-Config@2af57a5

[jcameron]

I do think it's safe to allow HTML by default - I'll make that switch in the next Usermin release.

[iliajie]

Haven't I already done it in the commits above?

[jcameron]

Your commit 2a3a1cd is in the wrong files.

[iliajie]

Oh, sorry, I thought I did it https://github.com/webmin/usermin/blob/2a3a1cd64cd8003db115990811e2df8faa76b767/mailbox/defaultuconfig.