1

Topic: Cannot receive mails

I cannot receive emails from any mail server to my local ired mail server.

all DNS entries have been configured as per the iRed documentation.

==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.7
- Linux/BSD distribution name and version: CentOS 7.0
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- Web server (Apache or Nginx): Nginx
====

Error message I am getting is: The connection to server timed out / Host unreachable.
Error code: 554 5.7.1 (when configuring microsoft outlook 2016)

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2

Re: Cannot receive mails

Does your ISP block port 25?

3

Re: Cannot receive mails

All ports are opened by default from our ISP.

I can send emails but not receive.
MX priority is highest for my mail server spf record.

4

Re: Cannot receive mails

Can you connect to port 25 of your server from your laptop? for example:

telnet <server-ip> 25

5

Re: Cannot receive mails

Now I resolved this issue of receiving mails,,,
but when i am configuring an account in outlook 2016 the LOG file gives me following error:

Feb 27 18:01:28 mail postfix/submission/smtpd[9656]: connect from unknown[103.210.46.27]
Feb 27 18:01:29 mail postfix/submission/smtpd[9656]: Anonymous TLS connection established from unknown[103.210.46.27]: TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)
Feb 27 18:01:29 mail postfix/submission/smtpd[9656]: NOQUEUE: reject: RCPT from unknown[103.210.46.27]: 554 5.7.1 <unknown[103.210.46.27]>: Client host rejected: Access denied; from=<office@local.powerguru.co.in> to=<office@local.powerguru.co.in> proto=ESMTP helo=<PGuruOffice>
Feb 27 18:01:29 mail postfix/submission/smtpd[9656]: lost connection after RCPT from unknown[103.210.46.27]
Feb 27 18:01:29 mail postfix/submission/smtpd[9656]: disconnect from unknown[103.210.46.27]

6

Re: Cannot receive mails

Please make sure Outlook is configured to perform SMTP/IMAP authentication.

7

Re: Cannot receive mails

It happens when I am configuring outlook for the first time.

When outlook is trying to send test mail to id it reverts in the log as earlier I have shown.

8

Re: Cannot receive mails

Is your IP blocked in Fail2ban service? You can check it with command:

iptables -L -n