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Routing – COS management

Classes of service (COSs) can be created for domains or individual users.

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Create new routing COS

This button is used to create new classes of service.

Filter criteria

  • Routing COS
  • Spam tag
  • Black tag

Routing COS

Name of the class of service with the domain for which the COS was created.

Spam tag

String for marking the subject line of identified spam.

Black tag

String for marking the subject line if the sender is listed in the RBL (real-time blacklist).

Create new routing COS

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Routing COS

Unique identifier for this class of service.

Domain

Select the domain for which the COS is to be created.

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RBL mode options

  • Options:
    • Off: Disable check, mail is delivered unchecked.
    • Tag: Mail is marked and delivered.
    • Quarantine: Mail will be moved to quarantine and listed in the junk-mail report.
    • Tag & Quarantine: Mail will be marked, moved to quarantine, and listed in the junk-mail report.
    • Block: Mail will be rejected.
    • Black Tag: This is where you specify the string for marking the subject line if the sender is listed in the RBL.

 

Spam mode

  • Optios:
    • Off: Disable check, mail is delivered unchecked.
    • Tag: Mail is marked and delivered.
    • Block: The message is rejected after being marked as spam.
      The recipient receives error code 5xx. Exception: If the message has more than one recipient of which, for example, one has an AS block activated and one recipient has spam tagging or whitelisting enabled, then the message is silently blocked for the first (blocking) recipient, i.e., blocked without a bounce message, and delivered to the other recipients as configured. (Not SMTP RFC compliant!)  

Spam Tag

This is where you specify the string for marking the subject line of identified spam.

Greylisting mode

Messages from unknown senders are temporarily rejected on first sending and only accepted on the second sending (repeated transmission attempt by the SMTP server). In this context, “unknown” means that no valid entry exists as yet for the triplet of the email address of the sender / email address of the recipient / IP address of the sender’s server.

  • Options:
    •  All: Messages from all senders go through the procedure in accordance with the greylisting principle unless there is an entry for the sender in a whitelist or greylist whitelist.
    • Blacklisted: Only blacklisted senders go through the procedure in accordance with the greylisting principle unless there is an entry for the sender in a whitelist or greylist whitelist.
    • Disabled: Disable check.

Block No-PTR

Mail is rejected if the sender’s IP address has no PTR.

Blacklist

The use of the user-based lists can be enabled or disabled for this class.

Whitelist

The use of the user-based lists can be enabled or disabled for this class.

Greylist Whitelist

The use of the user-based lists can be enabled or disabled for this class.

Antispam Commtouch

– Enable or disable Commtouch for this class. Emails can be handled based on the return value from the scanner.

  • Options:
    • Off: No email is spam.
    • Confirmed: Confirmed spam.
    • Confirmed & Bulk: Confirmed spam and advertising.
    • Confirmed & Bulk & Suspect: Confirmed spam, advertising, and uncertain assessment.
    • All: All emails are spam.

Cloudmark anti-spam

Enable or disable Cloudmark for this class.

Junk mail retention period (days)

Specify the number of days after which spam is to be deleted from the user quarantine. The default value is 30 days. A maximum of 180 days can be selected.

Junkmail mode

Specify the quarantine – user or domain quarantine.

Junk mail report

Specify the form in which the junk mail report is to be delivered.

  • Options:
    • Off: The user receives neither a welcome message nor a report.
    • Welcome Message: The user receives a welcome message but no report.
    • Report: The user receives a report but no welcome message.
    • Welcome Message & Report: The user receives a welcome message and a report.

Junk mail delivery time (UTC)

The junk mail report is delivered at the time specified here. The time is specified in UTC and must be adjusted accordingly.

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Sophos

Enable or disable Sophos anti-virus for this class.

ClamAV

Enable or disable ClamAV for this class.

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Max. message size (MB)

This is specified in megabytes. The system-wide maximum message size always takes precedence. The maximum message size is 999 MB. If the system-wide settings are to be applied, enter the value “0” here.

Block file attachment

If file-attachment blocking is globally enabled, settings can be made here for individual classes of service. In this case, the feature can also be deactivated, but globally specified file types are always blocked.

  • Options:
    • Disabled: Disable.
    • Block: Message is blocked, sender receives error code 5xx, session is terminated.

File endings

Specify the file-attachment endings to be blocked or removed. Specification separated by “:” (e.g., exe:cmd:com).

Sender Policy Framework

Check of the IP address of the sending server to prevent the falsification of sender addresses.

  • Options:
    • Disabled: Disable check.
    • Block: Messages are blocked, sender receives error code 5xx, session is terminated.
    • Tag: Messages are delivered marked with the black tag.

Local Recipient Callout (Sec.)

For local recipients, a check is made to determine whether the sending email address exists. This is where you specify the waiting time for the answer to the callout in seconds. The maximum waiting time is 999 seconds. Enter the value “0” if no check is to be performed.

Sender Check Local

Sender check for outgoing traffic coming from the relay list. Outgoing email traffic is checked to see if the MAIL FROM address is in the local database.

  • Options:
    • Off: Disable check.
    • On: Enable check.

Sender Check Local Auth

Outgoing email traffic is checked to see if the MAIL FROM address is consistent with the username or an alias of the mailbox.

  • Options:
    • Off: Disable check.
    • On: Enable check.

Editing the routing COS

Entries are edited in the form used to create them.

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