DAVdroid + Posteo

[Psycho_Bunny]

Hello,
I’ve tried to set up DAVdroid for Posteo.de but it doesn’t work whatever I’m doing.

What I’ve tried:

• Login with e-mail (name@posteo.de + password)
• Login with URL and username (https://posteo.de:8843 + name@posteo.de + password)
• URL https://posteo.de:8843/addressbooks/name/default
• Port 8443

I’m always getting this message:
Resource Detection
Neither CalDAV nor CardDAV service could be found

Debug info: https://pastebin.com/7TcNQvnu

[devvv4ever]

Can you also post the log that is appearing when you try to login?

[rfc2822]

DAVdroid is known to work with Posteo.

Did you try port :8443 like described on https://www.davdroid.com/tested-with/posteo/?

Also, please post the log that is appearing when you try to login.

[Psycho_Bunny]

I alread wrote that I also tried port 8443 but after my research I think 8443 is the old port and 8843 is the new one.
However, none of them works.

That’s the log when I try to login @ https://posteo.de:8843:
https://pastebin.com/4p9Es70Z

PS: As username I entered name@posteo.de but I also tried only “name” without @posteo.de.
Both didn’t work.

[devvv4ever]

I think it is either it is a temporary issues with posteo (this occurs on a regular basis) or some other app like a firewall, privacy guard or antivirus is blocking the connection.

[Psycho_Bunny]

It is a clean phone where I did a factory reset today.

[devvv4ever]

It’s working here with our test account (tries Login with URL and port 8843). Did you setup app-specific passwords or two factor auth with posteo?

Also try to change the network. Maybe your wifi router is blocking a connection.

[Psycho_Bunny]

I didn’t set an app-specific password or 2FA.
With the huawei mail client it works fine.

And the router doesn’t block anything.
On my other phone (Android it also works but with Mailbox.org account.

[devvv4ever]

Does setting up mailbox.org work with your current huawei phone?

[Psycho_Bunny]

@devvv4ever said in DAVdroid + Posteo:

Does setting up mailbox.org work with your current huawei phone?

Yes that works.

[devvv4ever]

Well, then I think I can’t help you any more… Must be a temporary connection problem with posteo, or you mis-typed something with in the login dialog, maybe the password?

https://posteo.de:8843
username@posteo.de + password

just worked for me…

[Psycho_Bunny]

I typed it 100% correctly since I’m using a password manager and this login works for website and mail client just fine.

Mh okay thank you anyway. I’ll try again tomorrow.

[rfc2822]

2018-06-17 20:20:29 1671 [HttpClient] <-- HTTP FAILED: java.net.ConnectException: Failed to connect to posteo.de/89.146.220.134:8843

This is a connectivity problem and probably not related to DAVdroid.

1. Did you try another connection type, e.g. mobile data vs WiFi?
2. Can you access https://posteo.de:8443 from a browser on your Android device?

[Psycho_Bunny]

I tried mobile data and also WiFi.

I can’t access https://posteo.de:8443 and neither with port 8843 from my android device. It says ERR_CONNECTION_REFUSED in chrome.

But when I try to access it from my desktop chrome I get a login window.
When I enter my posteo credentials I’ll get:

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
<s:exception>Sabre_DAV_Exception_NotImplemented</s:exception>
<s:message>GET is only implemented on File objects</s:message>
</d:error>

[rfc2822]

@psycho_bunny said in DAVdroid + Posteo:

I can’t access https://posteo.de:8443 and neither with port 8843 from my android device. It says ERR_CONNECTION_REFUSED in chrome.

Then this is a networking problem. It is not related to DAVdroid. You will have to find out why accessing posteo.de:8443 is not possible from your Android device.

[Psycho_Bunny]

I can access it from my other phone with Android 8.

As I said I made a factory reset on the Android 7 phone today. So this is a fresh installed Android 7 phone.
It isn’t possible for me to find out why I can’t access this site.

[devvv4ever]

This post is deleted!

[rfc2822]

@psycho_bunny Unfortunately, I can’t help you in this case. You will have to find out why you can’t connect to this IP/port from your phone. I suggest to use the browser to test the connection. As soon as the connection works in the browser, it should also work with DAVdroid.

[stefannagy]

I had the same problem with DAVdroid and Posteo and found the cause, so I wanted to share this:

I am using LineageOS 14.1 on a GT-i9300 (Samsung Galaxy S3) in Austria, my mobile telecommunications operator is A1. As far as I remember I never edited the APN settings after setting up my phone, so I suspect that the default APN for this operator is wrong (sure it’s possible I edited the settings and can’t remember it…). The active APN was named “live!” and used a Proxy – and I ran into the problem described here.

After changing the APN to “A1” (settings with the name of my mobile telecommunications operator and without a Proxy) I can’t reproduce this issue. You can find all APN settings included in LineageOS on GitHub.

BTW, thanks for DAVdroid!!