# Trouble successfully configuring an inbound email account
**URL:** https://community.zammad.org/t/trouble-successfully-configuring-an-inbound-email-account/915
**Category:** Technical assistance
**Created:** [July 1, 2018, 10:01pm UTC](https://community.zammad.org/t/trouble-successfully-configuring-an-inbound-email-account/915 "2018-07-01T22:01:53Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@FOGDrew](https://community.zammad.org/u/FOGDrew)
#### Post date: [July 1, 2018, 10:01pm UTC](https://community.zammad.org/t/trouble-successfully-configuring-an-inbound-email-account/915/1 "2018-07-01T22:01:53Z")
### Infos:
I am having trouble successfully configuring an inbound email account. This is a completely fresh installation of Ubuntu 16.04.4 and Zammad 2.5.x from the official repository.
- Used Zammad version: 2.5.x
- Used Zammad installation source: DEB
- Operating system: 16.0.4.4
- Browser + version: Chrome 67.0.3396.99 and Firefox 60.0.2
### Expected behavior:
Enter the settings after clicking on “New” under the Email Accounts under Channels, and then have zammad query the email server.
### Actual behavior:
After entering the correct server settings I receive the error “incompatible encoding regexp match (ASCII-8BIT regexp with UTF-8 string)”
If I try to submit multiple times I will occasionally see an additional error of “closed stream”
### Steps to reproduce the behavior:
Add a new email account of type IMAP using either SSL/STARTTLS or none with port 143 or 993.
I am using Dovecot as my IMAP server and have 100s of clients using these settings without incident.
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### Author:  [@tlook](https://community.zammad.org/u/tlook)
#### Post date: [July 12, 2018, 1:09pm UTC](https://community.zammad.org/t/trouble-successfully-configuring-an-inbound-email-account/915/2 "2018-07-12T13:09:22Z")
Just to confirm I am experiencing this issue as well. Running Debian 9, fresh install based on the Zammad docs.
> timothy@debian:~$ locale
> LANG=en\_US.UTF-8
> LANGUAGE=en\_US:en
> LC\_CTYPE=“en\_US.UTF-8”
> LC\_NUMERIC=“en\_US.UTF-8”
> LC\_TIME=“en\_US.UTF-8”
> LC\_COLLATE=“en\_US.UTF-8”
> LC\_MONETARY=“en\_US.UTF-8”
> LC\_MESSAGES=“en\_US.UTF-8”
> LC\_PAPER=“en\_US.UTF-8”
> LC\_NAME=“en\_US.UTF-8”
> LC\_ADDRESS=“en\_US.UTF-8”
> LC\_TELEPHONE=“en\_US.UTF-8”
> LC\_MEASUREMENT=“en\_US.UTF-8”
> LC\_IDENTIFICATION=“en\_US.UTF-8”
> LC\_ALL=en\_US.UTF-8
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### Author:  [@FOGDrew](https://community.zammad.org/u/FOGDrew)
#### Post date: [September 9, 2018, 4:34pm UTC](https://community.zammad.org/t/trouble-successfully-configuring-an-inbound-email-account/915/3 "2018-09-09T16:34:41Z")
I have just upgraded the previous version to 2.6.x and this problem still persists. Any idea of what to try?
---
### Author:  [@FOGDrew](https://community.zammad.org/u/FOGDrew)
#### Post date: [September 9, 2018, 5:17pm UTC](https://community.zammad.org/t/trouble-successfully-configuring-an-inbound-email-account/915/4 "2018-09-09T17:17:25Z")
Well after further troubleshooting… PLAIN authentication must be enabled on the server. A worthwhile note for anyone else experiencing this issue.
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### Author:  [@system](https://community.zammad.org/u/system)
#### Post date: [January 7, 2019, 5:17pm UTC](https://community.zammad.org/t/trouble-successfully-configuring-an-inbound-email-account/915/5 "2019-01-07T17:17:26Z")
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