| edit | purpose | allowed values | default |
|---|---|---|---|
| admin_auth_module | class for authentication of the administrator | class file | phplist_auth.inc |
| allowed_referrers | Domains that can refer to the phpList system | array of domains | empty array |
| attachment_repository | Location where uploaded files are stored | A webserver writable path | no value |
| bounce_mailbox_purge | delete bounces from the mailbox once they have been processed | true false 0 1 | true |
| bounce_mailbox_purge_unprocessed | Delete bounces from the mailbox that were not matched to be for a campaign or subscriber (unidentified bounce) | true false 0 1 | true |
| bounce_protocol | What method to use to fetch bounces | pop mbox | pop |
| bounce_unsubscribe_threshold | How many consecutive bounces to consider before marking a subscriber unconfirmed | Integer | 5 |
| check_for_host | Verify that the HOST part of an email address is a deliverable domain | true false 0 1 | 0 |
| database_connection_compression | Use compression in the mySql database connection | true false | false |
| database_connection_ssl | Use SSL when connecting to the database | true false | false |
| database_module | the file holding the database abstraction | mysql.inc | mysql.inc |
| default_system_language | Language to use when it cannot be determined from the context | ISO code of the language | en |
| export_mimetype | The mime-type sent to the browser for the export file | a mime-type | application/csv |
| installation_name | Name a phpList installation to be able to distinguish different installations | string | phpList |
| language_module | The default language for the frontend | any of the files in lists/texts/ | english.inc |
| message_envelope | The email address where bounces will go | one single valid email address | no value |
| noteditableconfig | Suppress certain config values from being editable in the admin pages. | array of values | empty array |
| pageroot | Location of phpList in relation to the web server root | a valid path | /lists/ |
| phpmailer_smtpuser | STMP Authentication username | string | no value |
| phpmailer_smtppassword | SMTP authentication password | string | no value |
| plugins_disabled | Disable selected plugins | array of plugin names | empty array |
| require_login | Activate the authentication system | 0 1 | 1 |
| table_prefix | prefix for all table names | string | phplist_ |
| tmpdir | Location to place temporary files, when needed | writable path for webserver | /tmp |
| usertable_prefix | prefix for subscriber related data | string | phplist_user_ |
| phpmailer_smtpoptions | pass smtpoptions to phpMailer | any valid smtpoptions for phpMailer | |
| stats_collection_address | Email address to send the statistics report to | email address | phplist-stats@phplist.com |
| ui | User Interface | any subdirectory in admin/ui/ | dressprow |