How to & FAQ

You can compose it and declare it using the /etc/mail/jchkmail/j-error-msg file. The message content is delimited by tags <XFILE>, <VIRUS> or <POLICY>. Inside the message, you can use one of this variables, witch value will replace thne ligne matching variable.

• MSGID - L'ID of message - that's the ficname put in quarantine.
• FROM - Sender Address.
• SUBJECT - Message Subject.
• WHY - The reason why that mail raise an exception.
• VIRUS - The virus name, in case of detection.
• ATTACHMENTS - The list of attached files.

Quarantined messages are stored at /var/spool/jchkmail directory.

This behavior is controlled by the following configuration options:

CLEANUP_INTERVAL                   21600
QUARANTINE_LIFETIME                86400

The first two configuration options say: the filter cleans up message spool directory each 21600 s (6 h) and removes all messages older than 86400 s (24 h).

The other three options are used to enable or disable quarantining.

• j-chkmail -n - to create one j-chkmail.cf file with options set with default values
• j-chkmail -m - to create one j-chkmail.cf file with current options

I ask j-printstat to give info about one week, but it only covers a few days j-printstat -q -l7d j-chkmail keeps some information about connections in /var/jchkmail/files

# HISTORY_ENTRIES
#     Number of entries of history (times 1024)
#  Syntax : -----
HISTORY_ENTRIES                    256

We will get stats about the last 256*1024 connexions. You can increase that value, but keep in mind that this will increase the database (currently 40Mo)

j-chkmail greylisting logic assign longer delays if the domain of the sender has not in common with the domain of the SMTP gateway. It's a fixed value of 30 minutes in the code (v1.13) instead of the 10 minutes default. If you want to correct that behaviour for such domains, then, you need to tell j-chkmail that gmail.com is equivalent to google.com

Check if you have these entries at your j-policy database :

GreyEquivDomain:gmail.com                         google.com
GreyEquivDomain:googlegroups.com                  google.com
GreyEquivDomain:googlemail.com                    google.com

They're included in the default configuration files.