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deltachat / deltachat-core

Delta.Chat C-Library with e2e chat-over-email functionality & Python bindings
https://c.delta.chat
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hotmail.com / outlook.com not working (with autocrypt?) #561

Open csb0730 opened 5 years ago

csb0730 commented 5 years ago

hotmail.com / outlook.com seems not to work!

DC version v0.100.0 from github.

A colleague of mine installed v0.100.0, created a new free account at outlook.com.

Mails sent from v0.100.0 to me without encryption are displayed at my phone (v0.20.0 and Thunderbird with Enigmail).

After I did first reply next mails from v0.100.0 peer are shown as empty mail with two binary attachments (ATT00001, 12 Bytes; ATT00002.bin, 2021 bytes). Both parts are encoded as “Content-Transfer-Encoding: base64”

No pgp part is seen in message source! No plain text part is seen in message source! ==> no idea about root cause for that behaviour. But message is full of MS specific headers and autocrypt header is not to be seen in headers!

Then switching with same installation to a gmx accout ==> all works fine as expected !!

Does anyone have an idea?

In any case whether outlook.com needs special preparation or setting changes or ms changed behaviour of mail server. But what is clear now is that description here about outlook.com/hotmail.com seems to be wrong meanwhile!

Does anyone have experience with ?

r10s commented 5 years ago

unfortunately, outlook and hotmail seems to have a whitelist for outgoing headers - and the Autocrypt: header as well as the Chat-Version and related headers are not part of this whitelist currently.

adbenitez commented 5 years ago

that sucks :(

r10s commented 5 years ago

i think we can work around this in a way, however, seems as if no one had the time yet :)

csb0730 commented 5 years ago

In a first step this should be documented in provider list.

So DC users can find this information quickly. Especially new users should get aware of this provider issue as quick as possible! They immediately assume a problem of DC itself if running into this situation.

Vistaus commented 5 years ago

Does not work indeed. Messages are sent and arrive in the Inbox, but are not displayed in the Delta Chat app.

Vistaus commented 5 years ago

Any updates? Would love to use my Outlook account in Delta.

r10s commented 5 years ago

Any updates? Would love to use my Outlook account in Delta.

afaik, not yet from the Delta Chat side. however, maybe Microsoft has stopped stripping outgoing Autocrypt- or Chat-*-Headers meanwhile ;)

csb0730 commented 5 years ago

My experience in the past was: As long as encryption is switched off, dc is working with outlook.com.

Make a trial. See dc's settings to switch off encryption.

csb0730 commented 5 years ago

An unusual approach to get outlook.com working would be to move the autocrypt staff into mail body!?

Extending Autocrypt standard by this fallback?

hpk42 commented 5 years ago

if someone could do manual tests whether putting an Autocrypt header into a mime message, and sending that through outlook.com, works, and has no weird side effects in the web interface or with other mailers, that'd be much appreciated!

On Thu, May 16, 2019 at 01:44 -0700, Christian Schneider wrote:

An unusual approach to get outlook.com working would be to move the autocrypt staff into mail body!?

Extending Autocrypt standard by this fallback?

-- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/deltachat/deltachat-core/issues/561#issuecomment-492976626

csb0730 commented 5 years ago

I mean, a standard pgp encrypted message does the same in putting all pgp encrypted stuff into the mail body. Why autocrypt (or dc) cannot use the same approach? Anyway: If we have an encrypted mail by autocrypt why not include the public key in body too? Maybe this could be forced by a special user setting?

r10s commented 5 years ago

I mean, a standard pgp encrypted message does the same in putting all pgp encrypted stuff into the mail body. Why autocrypt (or dc) cannot use the same approach? Anyway: If we have an encrypted mail by autocrypt why not include the public key in body too?

this - and more - is answered in the autocrypt-faq: https://autocrypt.org/faq.html#why-are-you-using-headers-rather-than-attached-keys