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Troubleshooting using Email Server on Debian

Asked 5 months ago (Jun 15, 2021) in the field of Operating Systems by Oliver23

Hi, i have recently installed  Email Server on Debian 10 but i do not receive emails in my mailbox immediately. How can I solve it?


Answers


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Answered 4 months ago (Jun 15, 2021) by Eldernode Staff

Please be aware that if you enable greylisting for the mailbox, the e-mail sent from outside your server does not arrive immediately at the mailbox. I mean you will see in mail log entries of the attempted delivery right away so you see that mail can reach your server. The greylisting entry in file /var/log/mail.log looks something like this:

Jan 02 20:23:12 dns1 postfix/smtpd[16911]: NOQUEUE: reject:   RCPT from mta-out1.inet.fi[62.71.2.194]: 450 4.2.0   <[email protected]>: Recipient address rejected: Greylisted,   from=<****@*****.***> to=<[email protected]> proto=ESMTP   helo=<******.****.***>

Also, it is possible to monitor the mail log in a terminal window as below example:

tail -f /var/log/mail.log

In case the Greylisting is your target, use the following commands:

tail -f /var/log/mail.log | grep Greylisted

Or

grep Greylisted /var/log/mail.log

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