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* Remove reject_unknown_sender_domain from the MX.Guilhem Moulin2015-06-071
| | | | | There are false-positive with that, for instead due to SOA records pointing to non-existing subdomains.
* wibbleGuilhem Moulin2015-06-071
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* Use the raw 'fripostListManager' as routing internal subdomain.Guilhem Moulin2015-06-071
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* Fix $smtpd_sender_restrictions.Guilhem Moulin2015-06-071
| | | | | | | | | | | | On the MDA the domain is our 'mda.fripost.org', there is no need to perform an extra DNS lookup. The MSA does not perform local or virtual delivery, but relays everything to the outgoing SMTP proxy. On the MX, there is no need to check for recipient validity as we are the final destination; but unsure that the RCPT TO address is a valid recipient before doing the greylisting.
* Explain why we use static transport maps and custom subdomains.Guilhem Moulin2015-06-072
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* Use $virtual_alias_domains not $virtual_mailbox_domains.Guilhem Moulin2015-06-075
| | | | | | | | | | | | | | | | | | | | | | | | | Quoting postconf(5): smtpd_reject_unlisted_recipient (default: yes) Request that the Postfix SMTP server rejects mail for unknown recipient addresses, even when no explicit reject_unlisted_recipient access restriction is specified. This prevents the Postfix queue from filling up with undeliverable MAILER-DAEMON messages. An address is always considered "known" when it matches a virtual(5) alias or a canonical(5) mapping. […] * The recipient domain matches $virtual_alias_domains but the recipient is not listed in $virtual_alias_maps. * The recipient domain matches $virtual_mailbox_domains but the recipient is not listed in $virtual_mailbox_maps, and $virtual_mailbox_maps is not null. Since we alias everything under special, "invalid", domains (mda.f.o and mailman.f.o), our $virtual_mailbox_maps was null, which led to reject_unlisted_recipient not being triggered for say, "noone@fripost.org". However, replacing $virtual_mailbox_domains with $virtual_alias_domains fits into the second point above.
* Perform the alias resolution and address validation solely on the MX:es.Guilhem Moulin2015-06-0710
| | | | | We can therefore spare some lookups on the MDA, and use static:all instead.
* Ensure Postfix's LDAP searchBase exists when doing a lookup.Guilhem Moulin2015-06-076
| | | | | | | | Postfix interprets Error Code 32 (No Such Object) as lookup failures, but that's ugly... Also, make Postfix simple bind against cn=postfix,ou=services,dc=fripost,dc=org.
* Remove o=mailHosting from the LDAP directory suffix.Guilhem Moulin2015-06-077
| | | | | | So our suffix is now a mere 'dc=fripost,dc=org'. We're also using the default '/var/lib/ldap' as olcDbDirectory (hence we don't clear it before hand).
* Fix a corner case in reserved-alias.pl.Guilhem Moulin2015-06-071
| | | | | 'if $l' is false when $l is 0, while 0@example.org is a perfectly valid address.
* Tell vim the underlying filetype of templates for syntax highlighting.Guilhem Moulin2015-06-071
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* Reload Postfix upon configuration change, but don't restart it.Guilhem Moulin2015-06-072
| | | | | | (Unless a new instance is created, or the master.cf change is modified.) Changing some variables, such as inet_protocols, require a full restart, but most of the time it's overkill.
* Don't restart/reload Postifx upon change of a file based database.Guilhem Moulin2015-06-071
| | | | | | And don't restart or reload either upon change of pcre: files that are used by smtpd(8), cleanup(8) or local(8), following the suggestion from http://www.postfix.org/DATABASE_README.html#detect .
* Replace IPSec tunnels by app-level ephemeral TLS sessions.Guilhem Moulin2015-06-072
| | | | | For some reason giraff doesn't like IPSec. App-level TLS sessions are less efficient, but thanks to ansible it still scales well.
* Outgoing SMTP proxy.Guilhem Moulin2015-06-071
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* Support boken SMTP clients and LOGIN SASL mechanism.Guilhem Moulin2015-06-071
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* Assume a DNS entry for each role.Guilhem Moulin2015-06-074
| | | | | | E.g., ldap.fripost.org, ntp.fripost.org, etc. (Ideally the DNS zone would be provisioned by ansible, too.) It's a bit unclear how to index the subdomains (mx{1,2,3}, etc), though.
* Decongestion potential bottlenecks on trivial_rewrite(8).Guilhem Moulin2015-06-077
| | | | | | | | | | | | | Which might be caused by slow LDAP lookups in transport_maps. Instead, we alias each addresses for which we want a custom transport to a dedicated "dummy" domain, and use a static (CDB) transport_maps to map said domains to their transport; the receiver can then use canonical(8) to restore the original envelope recipient. Since the alias resolution is performed by cleanup(8), which can run in parallel with other instances, it should decongestion bottlenecks under heavy loads. So far only the MX:es have been decongestioned. The list manager and the MDA should be treated as well.
* Fix the catch-all resolution again.Guilhem Moulin2015-06-0711
| | | | | | | | | | | | | | | | | | | | We introduce a limitation on the domain-aliases: they can't have children (e.g., lists or users) any longer. The whole alias resolution, including catch-alls and domain aliases, is now done in 'virtual_alias_maps'. We stop the resolution by returning a dummy alias A -> A for mailboxes, before trying the catch-all maps. We're still using transport_maps for lists. If it turns out to be a bottleneck due to the high-latency coming from LDAP maps, (and the fact that there is a single qmgr(8) daemon), we could rewrite lists to a dummy subdomain and use a static transport_maps instead: virtual_alias_maps: mylist@example.org -> mylist#example.org@mlmmj.localhost.localdomain transport_maps: mlmmj.localhost.localdomain mlmmj:
* Don't use IPSec to relay messages to localhost.Guilhem Moulin2015-06-071
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* typoGuilhem Moulin2015-06-071
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* Fix catchall resolution.Guilhem Moulin2015-06-0713
| | | | | | | | It has to be performed last, to give a chance to be accepted as a regular mailbox. We introduce a new, dedicated, smtpd daemon whose only purpose is to resolve catch-alls.
* Remove the 'fripostLocalAlias' attribute.Guilhem Moulin2015-06-074
| | | | | | | | | | | | | Instead, we pretend that lists are valid users (via a match in the mailbox_transport_maps) but choose a different transport (with the same request in transport_maps). The advantage is that we get rid of the ugly hack for list transport… A minor drawback is that we now have two LDAP lookups instead of one for non local addresses (ie, everything but reserved addresses). Hopefully the requests are cached; but even if they aren't, querying a local LDAP server is supposed to be cheap.
* wibbleGuilhem Moulin2015-06-071
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* wibbleGuilhem Moulin2015-06-077
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* Rename the role 'mx' into 'MX'.Guilhem Moulin2015-06-0712
Other abreviations are upper case.