Media types - SMTP authentication error

[MaelV]

Hi everyone,

I am facing issues with SMTP authentication on Zabbix : 7.0.0alpha9
Installed on a Debian 12 VM on VirtualBox

I am currently using a Exchange server for my compagny (ex-mail.biz)


My media types settings are as below;

Type = email
Email provider = Generic SMTP

SMTP server = ex-mail.biz
SMTP server port = 587
SMTP email = [email protected]
SMTP helo = i am not sure about this one ( private-xx.fr / or / ex-mail.biz )

Connection security = STARTTLS
SSL verify peer = unchecked
SSL verify host = checked

Authentication = normal password
User = [email protected]
Password = xxxxxxxxxxx


================================================

Debug logs = 5

cat /var/log/zabbix/zabbix_server.log

1094:20240111:080313.126 Starting Zabbix Server. Zabbix 7.0.0alpha9 (revision 6c4616adff7).
1094:20240111:080313.127 ****** Enabled features ******
1094:20240111:080313.127 SNMP monitoring: YES
1094:20240111:080313.127 IPMI monitoring: YES
1094:20240111:080313.127 Web monitoring: YES
1094:20240111:080313.127 VMware monitoring: YES
1094:20240111:080313.127 SMTP authentication: YES
1094:20240111:080313.127 ODBC: YES
1094:20240111:080313.127 SSH support: YES
1094:20240111:080313.127 IPv6 support: YES
1094:20240111:080313.127 TLS support: YES
1094:20240111:080313.127 ******************************
//////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////
1196:20240111:090800.263 failed to send email: An authentication function returned an error
1195:20240111:092524.894 failed to send email: An authentication function returned an error









================================================

I tested those settings with thunderbird installed in the Zabbix VM and it worked perfectly.
I can't figure out whats the issue and if its from the VM or Zabbix.

The only things i am not sure about is the SMTP helo and the SSL verify peer / host
I Already try to check / uncheck those settings and different SMTP helo.


I hope someone will have an idea of whats going on.
Thanks in advance for helping me.

[MaelV]

I did some wireshark to see where the problem could be, from what i understand it looks like the connexion is ok but then nothing ??
The other packets after that seems to be a another try from Zabbix

[MaelV]

I got some news, the issue seems to be that i use a "@" in the user authentification.
When i try without it the error became "login denied" which is normal because i can't write my full username.

Is there a way to write the username without getting the error ?

[MaelV]

I still have the same problem, i need to have a "@" in my username to connect to the server, i tried many things like quote but i still get the error.
Any ideas of how to get around it.

[AleAmadoC]

Hello, I'm having the exact same Issue, I tried to use my username without @ using domain\username, but got the same error, did you found a solution for this? I'm in full Release version 7.0

Best Regards

[sai.barker]

Hello,
I too am having the same problem.. Does anyone know a work around for this?

[sai.barker]

Does anyone know if this is a know bug?

[PavelSC]

Hello,
I too am having the same problem.. Does anyone know a work around for this?

Hi, I replaced the "@" symbol with "%" in the user authentification and it worked.
User = pavelsc@google.com changed pavelsc%google.com