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Topic: Cannot send email in outlook keeps pop up username and password

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release):
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Web server (Apache or Nginx):
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

I have experienced many users connect pop3 with outlook, they always get popup  windows for enter username and password, they just click OK button then it can send/receive mail normally.
And sometimes you have to click more than once and now it is not sending email stuck in outbox.
I have valid SSL Certificate 

Please assist

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Re: Cannot send email in outlook keeps pop up username and password

Any related log in Postfix log file (/var/log/maillog)?

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Does my reply help a little? How about buying me a cup of coffee ($5) as an encouragement?

buy me a cup of coffee

3

Re: Cannot send email in outlook keeps pop up username and password

If your client's IP address is 192.168.7.1, then that means you typed wrong username (the full email address) or password.

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Does my reply help a little? How about buying me a cup of coffee ($5) as an encouragement?

buy me a cup of coffee

4

Re: Cannot send email in outlook keeps pop up username and password

ZhangHuangbin wrote:

If your client's IP address is 192.168.7.1, then that means you typed wrong username (the full email address) or password.

That is not client's IP address -192.168.7.1 is our router interface address
This problem has started recently before we were sending emails with no problem.
Username & password is typed during setting up the POP3/Imap account.

5

Re: Cannot send email in outlook keeps pop up username and password

- Any related error log in Dovecot log file (/var/log/dovecot/*.log)?
- Did you change any config files recently?

----

Does my reply help a little? How about buying me a cup of coffee ($5) as an encouragement?

buy me a cup of coffee

6

Re: Cannot send email in outlook keeps pop up username and password

ZhangHuangbin wrote:

- Any related error log in Dovecot log file (/var/log/dovecot/*.log)?
- Did you change any config files recently?

We didn't change anything in config files.
There is no error in Dovecot log file