 I am writing this in English since I've looked high end low for a solution to this online and now that I have it figured out I thought I'd just post it here for Google to index so it can help others.
Basically, what I wanted to do was to have mail sent to a specific address piped to a perl script. I own the domain "sandman.net" and I wanted mail to "mailinglist@sandman.net" to be piped to my selfbuilt mailinglist manager, which resides, on the server, in path "/Users/sandman/MailExec/list.pl"
Coming from a sendmail background, I have messed around with /etc/mail/virtusertable and /etc/aliases to achieve this, but with postfix (the MTA in OSX) it wasn't as straightforward.
Basically, putting this in /etc/postfix/aliases didn't work:
- mailinglist: |/Users/sandman/MailExec/list.pl
And would bounce with "no such mailbox". Doing it the other way, in "/etc/postfix/virtual":
- mailinglist@sandman.net "|/Users/sandman/MailExec/list.pl"
Did the same. The solution was to make it a two-step process:
- /etc/virtual:
- mailinglist@sandman.net mailinglist
- /etc/aliases:
- mailinglist: "|/Users/sandman/MailExec/list.pl"
So, the virtual user table handles the incoming address and pipes it to the local user "mailinglist", which is piped to the perl script in the aliases file. This is the output of my postconf -n:
- alias_maps = hash:/etc/aliases
- command_directory = /usr/sbin
- config_directory = /etc/postfix
- content_filter = smtp-amavis:[127.0.0.1]:10024
- daemon_directory = /usr/libexec/postfix
- debug_peer_level = 2
- enable_server_options = yes
- html_directory = no
- inet_interfaces = all
- mail_owner = postfix
- mailbox_size_limit = 0
- mailbox_transport = cyrus
- mailq_path = /usr/bin/mailq
- manpage_directory = /usr/share/man
- maps_rbl_domains =
- message_size_limit = 0
- mydestination = $myhostname,localhost.$mydomain,mail.eklundh.com
- mydomain = eklundh.com
- mydomain_fallback = localhost
- myhostname = mail.eklundh.com
- mynetworks = 127.0.0.1/32,web.eklundh.com
- mynetworks_style = host
- newaliases_path = /usr/bin/newaliases
- owner_request_special = no
- queue_directory = /private/var/spool/postfix
- readme_directory = /usr/share/doc/postfix
- recipient_delimiter = +
- relayhost =
- sample_directory = /usr/share/doc/postfix/examples
- sendmail_path = /usr/sbin/sendmail
- setgid_group = postdrop
- smtpd_client_restrictions = permit_mynetworks reject_rbl_client sbl-xbl.spamhaus.org reject_rbl_client relays.ordb.org permit
- smtpd_enforce_tls = no
- smtpd_pw_server_security_options = cram-md5
- smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination,permit
- smtpd_sasl_auth_enable = yes
- smtpd_tls_cert_file = /etc/certificates/Sandman Mail Service.crt
- smtpd_tls_key_file = /etc/certificates/Sandman Mail Service.key
- smtpd_use_pw_server = yes
- smtpd_use_tls = yes
- unknown_local_recipient_reject_code = 550
- virtual_alias_maps = hash:/etc/postfix/virtual
- virtual_mailbox_domains = hash:/etc/postfix/virtual_domains
- virtual_transport = lmtp:unix:/var/imap/socket/lmtp
And after doing any edits to any of these files, issue these commands:
- cd /etc/postfix
- postmap virtual
- postalias aliases
- postfix reload
To make the changes active.
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