IspConfig3 Mails configuration

Hello isPers,

I have a problem of understanding ...

I installed ISPconfig3 on a VPS (it works fine) :

using a subdomain for installation: isp.domain1.tld

and I also configured the mail server with this host address = isp.domain1.tld

Then I created a series of mailBoxes of the main domain :

[email protected]
[email protected] etc...

So when I want to send a mail from one of these MailBoxes in my mail client settings:

Type => SMTP
Hostname of the SMTP server => isp.domain1.tld
SMTP server port => 587
E-mail "from" => [email protected]
Security => STARTTLS
Authentication => Plain
Username => [email protected]
Password => MyPassword

It works fine.

In my mind, "isp.domain1.tld" is my main mail server (postfix...)

But then I had to create other domains with ispConfig with other email addresses... :

domain2.tld

I create new mail addresses :

- [email protected]
- holla@@domain2.tld

And this is where I'm not sure anymore... it works but I don't know if I'm doing it correctly:

for "domain2.tld":
Type => SMTP
SMTP server hostname => isp.domain1.tld
SMTP server port => 587
E-mail " from " => [email protected]
Security => STARTTLS
Authentication => Plain
Username => [email protected] (mailBox from first domain for authentification)
Password => MyPassword

What I don't understand is that in the configuration of my mail client for the second domain if I put in authentication :

Username => [email protected] (mailBox second domain)
Password => MyPassword

It doesn't work. In login I always have to put an email address created with the first domain.

Is this normal or am I making a mistake somewhere?

Thanks for your help and sorry for this long mail

 

Did you add a new mail domain in ISPConfig? If so, did you select your isp.domain.tld as the server?

Run the following command on you mail server then try to send another email with the host that is failing. Post the log here using the code box. You can increase the number if you have a high volume of requests to the mail server.

Code:

sudo tail -fn 50 /var/log/mail.log

 

Hi @Cris_UK , no, I was configuring a Nextcloud on a second VPS… and config SMTP in it to outside notifications… Anyway… :
What I'd like to understand is why I configure a mail_client for my second mail domain, I have to fill "autentification fields" for StartTLS with e-mail_adress_account + password infos from my first mail domain installed.

Not sure to be clear

 

Hi @Jesse Norell
Okay, I think I understand. But then... what if I need to create a domain and a set of email addresses for a client? I'm not going to give him my "e-mail authentication + password" pair so that he can configure the smtp fields in his mail client?

So my question is; is it possible to configure and allow other smtp authentication pairs for a client domain?

Code:

example : client.domain.tld
mail adresse => [email protected]
smtp host => ???
-------------------------------------------------
Authentification => STARTTLS
Login => ???
Password => ???

Thanks

 

Hi @till
Damn!!! oO … It work

 

:: SOLVED ::