HELP - Sending Messages

[storesacecv]

I apologize as the solution might be easy, but I'm new to using Znuny. In fact, this is my first installation.
To try to avoid problems, I used the Digital Ocean droplet, which uses the "Znuny LTS - Version 6.5.8OS (Debian 12 bookworm)".
Apparently, the emails sent (the responses) go out without errors, but the truth is that they don't reach their destination.

Can anyone help me solve this problem?

Captura de ecrã 2024-06-03, às 01.25.07.jpg

[root]

Hi,

Start with checking the Sendmail* settings in the system configuration. Does they match what required by your email provider?

- Roy

[hkais]

very probably a typical case of trying to run own sendmail on the localhost without understanding a full public MTA requirement

I suggest you to use Postmaster Mail Accounts and to use existing preconfigured e-mail addresses via smtp and pop3/imap

you will find it under

https://yourznunyhost/otrs/index.pl?Act ... ailAccount

if you google for "how to configure smtp mail sending with Znuny" you will find well documented steps to reproduce your case

[storesacecv]

Thank you all so much for your help.

I asked my ISP for confirmation and received the following message:

Incoming mail server: xpto.cv
Outgoing mail server: xpto.cv
(server requires authentication)
You should use the SMTP protocol with SSL on port 465.
If you prefer to configure SMTP with TLS, use port 587.
Port 25 cannot be configured for security reasons.
Regarding the password, you should set it to "plain".

_______

I believe everything is set according to the required parameters.
Please see the attached image.

Additionally, by executing the command:
openssl s_client -starttls smtp -connect xpto.cv:587

I can connect and authenticate (using base 64) from my server where I have Znuny installed.
I really don’t know where the problem might be.

Notice: I can get emails. My problem is that I cannot send emails.

Znuny - Mail Configs_web.jpg

[root]

Hi,

The communication log from the 1st post says you're using Sendmail and not SMTPTLS. Have you deployed the changed system configuration?

- Roy

[hkais]

Thank you all so much for your help.

I asked my ISP for confirmation and received the following message:

Incoming mail server: xpto.cv
Outgoing mail server: xpto.cv
(server requires authentication)
You should use the SMTP protocol with SSL on port 465.
If you prefer to configure SMTP with TLS, use port 587.
Port 25 cannot be configured for security reasons.
Regarding the password, you should set it to "plain".

_______

I believe everything is set according to the required parameters.

Could not resist, I believe also in a mosque or church, but in IT I only trust facts like logs and configs

Additionally, by executing the command:
openssl s_client -starttls smtp -connect xpto.cv:587

I can connect and authenticate (using base 64) from my server where I have Znuny installed.
I really don’t know where the problem might be.

Notice: I can get emails. My problem is that I cannot send emails.

Could you solve your issue in the meanwhile?