Howtos / Articles

Installing Microsoft Exchange 2010 on Windows Server 2008 R2

Exchange Server 2010 is currently (at the time of writing) the latest version of Microsoft’s email server software. Its main features consists of email, calendaring, contacts, and tasks. This how to article will outline the steps required to install Microsoft Exchange Server 2010 on a Windows Server 2008 R2 machine. The steps should remain the same for a standard Windows Server 2008 (64-bit required) machine, as long as it is up to date with all the latest updates. Prerequisites You…

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Remove mail from the Postfix queue

Queue maintenance is an important part of the administration of any SMTP mail server. There may be times where you get a lot of emails attempting to be sent, that either aren’t getting transmitted successfully, or you don’t want them to get transmitted. The “postsuper” command allows you to remove individual emails, or even all emails from the queue. If you would like to just remove one specific email from the queue, you need to get the Queue ID. You…

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View the Postfix mail queue

If you are having issues sending emails with the Postfix SMTP server, the two best places to look to diagnose the issue, are the log files, and the mail queues. Any emails that don’t get sent successfully, or that haven’t been sent yet, will be stored in the queue waiting for transmission/re-transmission. To view the Postfix mail queue, you can use the following command: postqueue -p -p = Produce a traditional sendmail-style queue listing. After the Queue ID field in…

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Flush the Postfix mail queue to force retry

Typically if a mail server can’t connect to a remote mail/SMTP server, it will keep the email in a queue and periodically retry sending the email until it is either successful, or fails after a specific time frame which set in the mail server configuration. This tip shows you how to flush the Postfix mail queue, which will retry any emails that are waiting to send, or waiting to be resent (due to errors such as DNS resolution, or connectivity…

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