Spam Quarantine (web/IMAP)
Posted by Martin Helms on 04 November 2013 22:19
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The quarantine system can be accessed directly via IMAP, or using the webinterface. Note that the use of the quarantine is optional, and not a necessity. Emails placed in quarantine have been rejected with a 5xx SMTP rejection code as SMTP level, so legitimate sending servers will have informed the sender about the rejection. Spam messages that were temporarily rejected at SMTP level are not listed in the quarantine, and will be automatically retried by legitimate sending servers.
From the webinterface you can either delete or release messages blocked as spam. In case an email has been correctly blocked, clicking release will result in delivery of the false positive to the original recipient. It will also trigger a report about the wrong classification to our systems to further improve the filtering.
The quarantine system is powered by an IMAP backend. The backend is accessible as administrator (using the special "global" account), domain (using the domainname), and recipient (using the email address). Customers using the SpamExperts hosted cloud can connect to quarantine.antispamcloud.com. Users on a SpamExperts Local Cloud can use the hostname of the primary server in that cluster (or a CNAME associated with it). We have instructions available for Thunderbird and Outlook. Using IMAP you can also mass release specific emails. For Local Cloud users there is also a special "global" account which can be used to retrieve IMAP access to all quarantined messages.
There are several special folders present in the IMAP account: