1 Topic by graabein (edited by graabein 2015-01-31 05:43:57)

  • graabein
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Topic: iRedmail system users show up at Ubuntu GUI login screen?

==== Required information ====
- iRedMail version: 0.9.0
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: Ubuntu 14.04
- Related log if you're reporting an issue:
====

Hello

After installing iRedmail, it created three users, "iredadmin", "iredapd" and "vmail" that show up on my main Ubuntu GUI login screen, along with myself as the main user.

1. Why do these users show up on the GUI login screen as ordinary users of the computer?

2. How do I remove those users from the GUI login screen?

3. Is it possible to remotely log into my computer using these usernames?  Do they have a login password?

4. Is there some security risks involved?  If so, what do I do about it?

Thank you.

----

Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Supports Amazon S3 compatible storage and custom branding.

2 Reply by graabein

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Re: iRedmail system users show up at Ubuntu GUI login screen?

I see now (looking in Ajenti admin panel), that these three users are not even system users.  In Ajenti they show up as:

    nobody    65534
    xxxxxx    1000 (this is myself)
    vmail    2000
    iredadmin    2001
    iredapd    2002

So why are they created?  Can I just delete them, as they are not system users?

3 Reply by 7t3chguy

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Re: iRedmail system users show up at Ubuntu GUI login screen?

graabein wrote:

I see now (looking in Ajenti admin panel), that these three users are not even system users.  In Ajenti they show up as:

    nobody    65534
    xxxxxx    1000 (this is myself)
    vmail    2000
    iredadmin    2001
    iredapd    2002

So why are they created?  Can I just delete them, as they are not system users?

vmail is created to run `Dovecot` if you delete it you will lose IMAP/POP3/LDA/etc functionality.
iredadmin is created to run the iredadmin panel through uwsgi, can be deleted if you do not want it.
iredapd being removed, will similarly to vmail being removed break a lot of things. It runs the iRed Access Policy Daemon via Python.

http://askubuntu.com/questions/92349/ho … gin-screen
The iRed Accounts are created with a shell of `/sbin/nologin`

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4 Reply by graabein

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Re: iRedmail system users show up at Ubuntu GUI login screen?

Thank you for explaining and linking to that useful article.

One more linuxnewbiequestion though: How can I check that these users are "with a shell of '/sbin/nologin' and can not log in to my computer?

5 Reply by 7t3chguy

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Re: iRedmail system users show up at Ubuntu GUI login screen?

graabein wrote:

Thank you for explaining and linking to that useful article.

One more linuxnewbiequestion though: How can I check that these users are "with a shell of '/sbin/nologin' and can not log in to my computer?

In shell run 'cat /etc/passwd'
The last part of the respective users line is the shell

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6 Reply by ZhangHuangbin

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Re: iRedmail system users show up at Ubuntu GUI login screen?

It's annoying to show uids which has /sbin/nologin as login shell in login GUI. sad