[Solved] Carbonio Mail Android v 1.5.10 is broken

Same issue, i tested 1.6.1_release, the server is in 25.12.0,authent error.

In the log server :

"GET https://mail.fqdn.tld/zx/auth/supported HTTP/1.1" 502 1288 "-" "Carbonio Mail - Android - v1.6.1_release - API36 - M2101K7BNY" "127.78.0.1:20008" "xxx.yyy.zzz.113:443"

We have the same issue. In nginx.log we see the following in addition to the log line in the previous comment:

2026/02/17 14:21:37 [info] 737174#737174: *329 client closed connection while SSL handshaking, client: 127.0.0.1, server: 0.0.0.0:443
2026/02/17 14:21:37 [error] 737174#737174: *330 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 194.xxx.yyy.zzz, server: mail.domain.tld, request: "GET /zx/auth/supported HTTP/2.0", upstream: "http://127.78.0.1:20008/zx/auth/supported", host: "mail.domain.tld"

It seems that ` http://127.78.0.1:20008/zx/auth/supported` is not working correctly, which can be verified with

$ curl -v "http://127.78.0.1:20008/zx/auth/supported"
* Trying 127.78.0.1:20008...
* Connected to 127.78.0.1 (127.78.0.1) port 20008 (#0)
> GET /zx/auth/supported HTTP/1.1
> Host: 127.78.0.1:20008
> User-Agent: curl/7.81.0
> Accept: */*
>
* Recv failure: Connection reset by peer
* Closing connection 0
curl: (56) Recv failure: Connection reset by peer

Any idea how to fix this?

Hi,

I try install apt install carbonio-advanced for bypass, but since androis app say :server not available for your user profile.

removed and restart server does not solve the problem.

Hi @sharif

Version 1.6.1 does not seem to fix the error either.

Has there been any progress on this issue?

Thanks

Same problem. After auto update of application 1.6.1 same message, the server is in 25.12.0,authent error.

I confirm this issue. 

I've installed an old version while while I get a fix for it or Carbonio release a new version: https:// apkpure dot com  es/ carbonio-mail/ com.zextras.iris/ download/ 1.5.7_release

"A new version (1.6.1 of 02/16/2026) fixes our problems "
For us no. We are on the 25.9.0 Community Edition
thanks in advance

@sistemak-imh @fernet @philifort

I see the the latest app version is:

version 1.11.1_release

Screenshot link

I would request you all to try followings:

1. use version 1.11.1_release

2. Do not use self signed certificate while login. Therefore, deploy free (Let's encrypt) or commercial certificate and then try to login again.

Let me know.

@sharif version 1.11.1 is for Chat not Mail, unless there's a Mail version 1.11.1 coming, but not available yet in the Play Store?

@lpchouinardrss 

Ah..Thanks for helping me out. Let me check the mail app.

@all

I talked with the devs. They are working to release a fix before Monday. I would let you know the update. 

Thanks!

@sharif, many thanks!!! Version 1.6.2 for Android working well. Auth error fixed!

Same here with 1.6.2, tested with 4 users, problem solved. thx!

here, also working again with the last version. Thank you so much. Have a great weekend

I confirmed that the problem is resolved with new version. Good Job and many thanks to Zextras Staff...