https://wiki.pscs.co.uk/ 2026-05-13T06:28:12+00:00 https://wiki.pscs.co.uk/ https://wiki.pscs.co.uk/_media/wiki:dokuwiki.svg text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:mappings?rev=1542192349&do=diff Mappings In VPOP3, Mappings are a way of explicitly linking an email address to a user or list. They can also be used to indicate that an email address is remote, even though it would otherwise appear to be a local email address. In other email servers, a similar feature may be called 'aliases' text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:route_by_parsing_message_headers?rev=1542192349&do=diff Route incoming POP3 mail by parsing message headers This routing method is generally used if you have a catch-all or 'multi-catch' mailbox with your Internet provider. With this method, VPOP3 will look at the To/Cc and other fields in the message headers to try to work out who the message is for. If the recipient is not listed in the headers (eg for BCCd mail) it may not be able to automatically detect who the message is for. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:local_mail_general?rev=1542192349&do=diff Settings -> Local Mail -> General The Local Mail -> General page allows you to configure a few simple, but fundamentally important settings. Default Domain In the majority† of cases, this is the domain name that VPOP3 will use when sending automated messages; for instance, users may receive a message from text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:sender_advanced_settings?rev=1542192349&do=diff Mail Sender Advanced Settings Mail Connectors -> Mail Senders -> (name) -> Advanced Advanced Domain Filtering For VPOP3 v6.11 and later, see the Domain Filtering section of the user manual. The Domain Filtering box lets you restrict which email messages are sent via this Mail Sender. You specify each rule on a separate line, and the message will be sent if it matches any sender rule text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:smtp_spam_reduction?rev=1542192349&do=diff SMTP Server -> Spam Reduction The Spam Reduction tab lets you configure various ways VPOP3 can reduce spam and email address spoofing Domainkeys “Domainkeys” is a way of signing a message to show that it comes from the person it claims to come from. The system is too complex to go into here, but it essentially takes key parts of the message header, as well as the message body and creates a PKI digital signature on it, using a 'private key' on your system. The receiving end will find the same… text/html 2023-11-12T09:51:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:dmarc_reporter_script?rev=1699782700&do=diff DMARC Reporter Script (from VPOP3 v8.6 onwards) This script lets you customise how VPOP3 sends DMARC reports to the sending domain. This can be useful in case the sending domain's DMARC configuration is incorrect as that can cause errors sending the reports or cause messages to be 'stuck' in VPOP3's Outqueue. These problems won't cause any lasting damage, but may be inconvenient or annoying, so you can alter the behaviour using Lua scripting text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:spamrules_longsenderdomain?rev=1542192349&do=diff Spamrules example - increase spam score for long sender domain This script is for the case where you to increase the spamminess of emails where the sender's email address contains a long domain. In this case we'll say if the sender's domain has 20 or more characters in the first section (between the @ and first .). Note that we do not necessarily recommend that you do this as it is not a very good indicator of spam, but it is something we've been asked for, so here it is. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:signature_script?rev=1542192349&do=diff Signature Script If you want more complex signatures on outgoing emails, rather than the static text/HTML you can define within VPOP3, then you can use a simple Lua script to define the signature. The Lua script is stored in a file called signature.lua text/html 2023-03-27T10:32:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:user_routing_script?rev=1679913138&do=diff User Routing Script If there is a <username>/user_redirect.lua script, this Lua script can override VPOP3's message routing options. You can edit this either in the Settings -> Scripts page in the settings, or via the 'Routing' tab in the user's settings in the VPOP3 administration console. This script affects how VPOP3 will handle how messages text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:sender_direct_settings?rev=1542192349&do=diff SMTP Direct Sender Settings Mail Connectors -> Mail Senders -> SMTP Direct Sender -> Settings tab The SMTP Direct Settings tab lets you set how VPOP3 will send mail using SMTP Direct DNS Servers to Use This setting tells VPOP3 the IP addresses of the DNS servers it should use to find the recipients' mail servers. Separate multiple addresses with commas. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:lists?rev=1542192349&do=diff Lists The Lists section in VPOP3 lets you view and manage the various types of 'List' which VPOP3 supports * Distribution Lists * Mailing Lists * Forwardings * ODBC Mailing Lists * Groups Using a list A list will contain zero or more 'members' (usually email addresses) which can be messaged all at once. To send a message to all the members of a list, you will usually send an email to the listname at a valid domain. text/html 2026-02-24T15:50:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:lua_smtp_mx_server_rules?rev=1771948203&do=diff Lua SMTP MX Server Rules Every time VPOP3 checks for remote MX server for sending messages using direct MX sending, it runs a script called mxserverrules.lua which can be created/edited in Settings -> Scripts (or in the VPOP3 directory in VPOP3 v6.6 or earlier). text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:listserver_settings?rev=1542192349&do=diff ListServer Settings Settings -> ListServer Settings In VPOP3, the ListServer is an automated 'user' which handles mailing list requests, such as subscribe & unsubscribe commands. Anyone can send an email to the ListServer to subscribe to (public) mailing lists, or unsubscribe from mailing lists they are on, or see a list of public mailing lists etc. text/html 2026-02-24T15:49:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:lua_smtp_mx_control?rev=1771948188&do=diff Lua SMTP MX Control Every time VPOP3 is going to send messages using direct MX sending, it runs a script called mxout.lua which can be created/edited in Settings -> Scripts (or in the VPOP3 directory in VPOP3 v6.6 or earlier). Global Variables Starting with v8.8, the following global variables are defined: text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:misc_general?rev=1542192349&do=diff Misc -> General Tab VPOP3 Host Name The VPOP3 Host Name is used by VPOP3 when it is telling other mail software what it is called. For instance, when it connects to another SMTP server it will send the host name as the parameter for the HELO or EHLO command, and when an SMTP client connects to VPOP3, it announces its name in the welcome banner as required by the SMTP standard. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:smtp_direct?rev=1542192349&do=diff Mail Connectors -> Mail Senders -> SMTP Direct VPOP3 can be configured to send mail directly to the recipient's mail server (or the recipient's mail service provider). Usually this is only used if you have a high-end business class Internet connection - such as a leased line, or your mail server is co-located in a data centre. Attempts to use SMTP Direct sending on a dial-up/ADSL/Cable/FTTC/etc connection may be problematic since the receiving mail server may think you a home user who has been … text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:smtp_reputation_stats?rev=1542192349&do=diff SMTP Reputation Stats (Added in v6.20) If you receive email by direct incoming SMTP (not via an ISP or filtering service) then you can tell VPOP3 to report sender reputation statistics back to VPOP3. This is enabled/disabled in the Settings -> Misc Settings page. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:groups?rev=1542192349&do=diff Groups In VPOP3 a 'group' is mainly an administrative feature. If you only wish to have a list of email addresses to send messages to under one address, you should use the 'List' feature instead. The main function of Groups is to let you set certain user attributes for a whole group of users at once. text/html 2025-08-20T16:08:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:lan_forwarding_script?rev=1755706120&do=diff LAN Forwarding Scripting (Added in V8.7) This is stored in the 'LanForwarding.lua' script in Settings -> Scripts Pre-send These functions are called before the message is placed in the LAN Forwarding queue There are two global variables set: * text/html 2025-08-14T09:24:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:lua_smtp_relay_control?rev=1755163495&do=diff Lua SMTP Relay Control Every time VPOP3 is going to send messages via SMTP Relay, it runs a script called relayout.lua in the VPOP3 directory. Global Variables This script may have global variables, depending on your version of VPOP3. In VPOP3 3.0.0L and later, there are two read-only global variables set at the start of the script: text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:misc_advanced?rev=1542192349&do=diff Misc -> Advanced Tab Settings -> Misc Settings -> Advanced You will normally not need to change any settings on this page unless VPOP3 technical support have suggested it. If you do make changes, and want to go back to the original settings, the Restore Defaults button will restore the settings to their defaults. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:sender_advanced_relay_settings?rev=1542192349&do=diff Mail Sender Advanced Relay Settings SMTP Return Address The SMTP Return Address (or Return Path) is a hidden part of a message which says where bounce messages (and other automated responses) should be sent. (It is not the same as the Reply address text/html 2023-01-18T15:57:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:spam_filter_rules?rev=1674057433&do=diff Spam Filter Rules VPOP3 Versions 2.1.7 and later have a built-in spam filter system which supports a simple script language optimised for content- and spam-filtering of email messages. This reference contains a definition of the spam filtering script language supported by VPOP3. Note that as later versions of VPOP3 are released, more language features may be added, so this reference indicates in which version of VPOP3 a particular feature was added. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:spamrules_statement_dns?rev=1542192349&do=diff Spam Filter Rules: DNS Statement DNS Version 2.1.11+ Purpose Allows the script to perform an arbitrary DNS lookup, returning the result into a specified variable The DNS statement requires a type, hostname and variable name, in the format DNS <type> <hostname> <variable name> text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:spamrules_statement_getaddresstype?rev=1542192349&do=diff Spam Filter Rules: GetAddressType Statement GetAddressType Version 2.4.6+ Purpose Analyses a specified email address and reports what 'type' of address it is The GetAddressType statement requires an email address and variable name, in the format text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:spamrules_statement_ifinbag?rev=1542192349&do=diff Spam Filter Rules: IfInBag Statement IfInBag Version 2.3.7+ Purpose Checks if a specified value is in a particular bag The IfInBag statement requires a bag name and value, in the format IfInBag <bag name> <value> * All IfInBag statements must be followed by an text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:spamrules_statement_startsurbl?rev=1542192349&do=diff Spam Filter Rules: StartSURBL Statement StartSURBL Version 2.2.1+ Purpose Begins an asynchronous SURBL lookup in advance of the result being required in a subsequent SURBL statement The StartSURBL statement requires a hostname and SURBL zone, in the format text/html 2023-08-14T16:01:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:spamrules_variables?rev=1692028861&do=diff Spam Filter Rules: Variables The VPOP3 spam filter script language supports simple variables. In most places these are specified as ${<variable name>}, but in some places they are just specified as <variable name> - for instance where a statement always puts its result into a variable. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:user_autoresponder?rev=1542192349&do=diff Autoresponder An autoresponder is a way of automatically replying to messages as they arrive in a user's mailbox. In VPOP3, an incoming message must arrive in a user's mailbox for the autoresponder to trigger. If you use forwards, assistants, mappings, etc to divert a message before it arrives in the mailbox, the autoresponder will never trigger. If you want to use an autoresponder, but not keep the original message, then make sure the message arrives in the mailbox (eg by using an 'Assistant'… text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:list_all_messages_in_lan_forwrding_queue?rev=1542192349&do=diff Database query to list ALL messages in the LAN forwarding queue The VPOP3 settings show the first 100 messages in the LAN forwarding queue. Usually this is sufficient as the LAN forwarding queue is usually nearly empty, but in case of a problem it may be much bigger. The database queries below may help in that situation. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:list_failed_message_send_summary?rev=1542192349&do=diff Database query to list failed message sends This will list failed outgoing messages from the last 3 days (with the default VPOP3 settings) At a command prompt in the VPOP3 directory run psql (The password is 'vpop3pass') Then, type select created,returnpath,subject,username || '@' || domain as recipient, latesterror from outqueue.outrecipients inner join outqueue.outmessages using(msgid) where failedtime is not null order by created desc; text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:list_messages_in_lan_forwrding_queue_waiting_to_go_to_a_specific_server?rev=1542192349&do=diff Database query to list messages in the LAN forwarding queue waiting to go to a specific server The VPOP3 settings show the first 100 messages in the LAN forwarding queue. Usually this is sufficient as the LAN forwarding queue is usually nearly empty, but in case of a problem it may be much bigger. The database queries below let you list just messages going to a specific server. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:mail_senders?rev=1542192349&do=diff Mail Connectors -> Mail Senders The Mail Sender tells VPOP3 how to send mail out to the Internet. If you want to send mail for specific users to another specific mail server (e.g. a local Microsoft Exchange Server or another VPOP3 server) then use the text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:misc_dns?rev=1542192349&do=diff Misc -> DNS Tab Settings -> Misc Settings -> DNS The DNS tab lets you specify which DNS servers VPOP3 will use. DNS (Domain Name System) is a system which converts Internet host names (eg www.google.com) into a numeric IP address (eg 1.2.3.4), because all connections on the Internet are actually performed using numeric IP addresses, but it is easier for people to remember names. text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:pop3_collection?rev=1542192349&do=diff POP3 Mail Collection POP3 Mail Collection is when VPOP3 will collect mail from an external POP3 mailbox - for instance, from an Internet Provider. POP3 General This page tells VPOP3 how to collect mail. * POP3 Server Address - this is the name (or IP address) of the POP3 server from which you want VPOP3 to collect mail text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:settings?rev=1542192349&do=diff Settings * Admin Settings * Anti-virus * Attachment Processing * Autoresponder Settings * Database * Diagnostics * FaxServer * Global Address Book * Global Signature * Groups * Header Processing * Receipts/Urgent Messages * Global Header Modifiers * Legacy Extensions * Listserver Settings * Local Mail * General * Domain Mappings * LAN Forwarding * Configuration * Queue Status * Logging * Message Archive * Message Monitoring * Misc Se… text/html 2018-11-14T10:45:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.pscs.co.uk/reference:spamrules_statement_surbl?rev=1542192349&do=diff Spam Filter Rules: SURBL Statement SURBL Version 2.1.7+ Purpose Allows a SURBL lookup on the specified hostname or IP address in the specified SURBL zone, and returns the result into the specified variable The SURBL statement requires a hostname, SURBL zone and variable name, in the format