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From: SourceForge.net <no...@so...> - 2008-04-05 18:13:32
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Patches item #1901104, was opened at 2008-02-24 17:42 Message generated for change (Comment added) made by nobody You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=937966&aid=1901104&group_id=191583 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Core Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Guido Boehm (lenix) Assigned to: Nobody/Anonymous (nobody) Summary: domain aliases without bounces/backscatter Initial Comment: see http://sourceforge.net/forum/message.php?msg_id=4678100 for full problem description. in short: the current mechanism to do domain-aliasing (joh...@al... goes to joh...@re..., fo...@al... goes to fo...@re..., ...) is to insert a record into the alias-table, like address:@alias.com goto:@real.com. unless @real.com has catchall configured (address:@real.com, goto:us...@re...) this solution will generate bounce-mails. postfix will accept all mail for @alias.com, and only afterwards notice that there's no such user @real.com. this "backscatter"-problem makes you unpopular among other postmasters, so you would better try to avoid bouncing many messages. unfortunately, the only way to handle such situations in postfix without producing backscatter involves creating another table and modifying some main.cf configuration. this patch adds an alias_domain table to the setup, includes documentation for postfix-configuration and adds proper listing and forms for handling those alias-domains. it can peacefully co-exists with the "old" way to do domain-aliasing, that means that @alias.com -> @real.com in 'alias'-table will keep working, but it'll still have the same problems described above. since there are new forms/errors/... there are a lot of new strings to translate, i'll provide a german translation myself the next days. Do these new items have to be added to DOCUMENTS/LANGUAGE.txt? regarding PgSQL, i tried to support it everywhere i added new queries, but since i have no postgres-installation at hand i didn't test the relevant parts. it would be nice if somebody could provide some feedback/fixups on this topic. have fun, guido 'lenix' boehm ---------------------------------------------------------------------- Comment By: Nobody/Anonymous (nobody) Date: 2008-04-05 11:13 Message: Logged In: NO Hi Lenix, hope you got some sleep! Thanks for answering my questions. It's a great patch (useful, AND well written) so many thanks for sharing it with us. I hope the postfixadmin team get chance to add it to upstream as it addresses a real problem with the existing system - nobody wants a backscattering mail server! Best Chris ---------------------------------------------------------------------- Comment By: Guido Boehm (lenix) Date: 2008-04-04 17:26 Message: Logged In: YES user_id=142401 Originator: YES Hello Chris, thanks for testing :-) It does mean exactly what you described, although it works for (regular) aliases configured for foo.com, too. So if you happen to have a "fhk...@fo..." alias defined in your example (2), an email to "fhk...@ba..." would be accepted and delivered to whatever turns to be the target (goto/..) of "fhk...@fo...". Next to this you could configure additional addresses which exist only for "bar.com", but would be rejected for "foo.com". Let me know if there's anything left unclear to you, it is currently 2:20am over here, so i might sound a bit confusing again.. ---------------------------------------------------------------------- Comment By: Chris Nolan (chris_nolan) Date: 2008-04-04 14:57 Message: Logged In: YES user_id=2054925 Originator: NO Hmmmm, this looks useful although I'm *slightly* confused about it... Does this patch in effect mean that 1) if I have user1, user2 and user3 set up as mailboxes on foo.com then I alias bar.com to foo.com that postfix will now automatically accept all mail for us...@ba... us...@ba... and us...@ba... and they will be delivered to us...@fo... us...@fo... and us...@fo... respectively? 2) that any mail to an unknown user "fhk...@ba..." that is not set up as a mailbox on foo.com will be rejected with a 550 response? Anyway, the patch applies very nicely against revision 316 too (there is a 2 line difference somewhere, but it applies fine). You need to add a line to templates/menu.php at line 26 for the new feature to be available from the admin menu: $submenu_domain .= _menulink("create-alias-domain.php", $PALANG['pMenu_create_alias_domain']); Hope you can answer my two questions! ---------------------------------------------------------------------- Comment By: Guido Boehm (lenix) Date: 2008-02-24 17:44 Message: Logged In: YES user_id=142401 Originator: YES oh, and patch is diff -pruN against svn 299 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=937966&aid=1901104&group_id=191583 |
