An introduction layer to Frozen mails

Simply, frozen emails are the emails sent to invalid, non existing email accounts that were undelivered to the address correctly.

If the email can’t be delivered to an account, the email will be added in the queue and Exim will try a couple of times to deliver the email as per the settings in the RETRY CONFIGURATION in Exim conf file.

If the email didn’t deliver to the recipient after the predefined days in Exim conf (timeout_frozen_after), those emails will be marked as frozen.

# grep timeout_frozen_after /etc/exim.conf

timeout_frozen_after = 5d

The exim mail server has a lot of command line options to manage email queue. Refer this topic for How to check spamming on server which has Exim as MTA.

How to remove all frozen emails from the mail queue?

Here we goes! You can remove the frozen mails by executing different combinations of Exim commands.

Method I

By using ‘exim -bp‘ command

# exim -bp|grep frozen|awk '{print $3}' |xargs exim -Mrm

Method II

By using ‘exiqgrep‘ command

# exiqgrep -iz|xargs exim -Mrm

Cool 🙂

Related

1, How to check spamming on server which has Exim as MTA
2, Exim Log line flags
3, Exim command to find the mail that we have sent is completed or not(Unix/Linux)