Catch All email alias *@domain.com

Question

Catch All email alias *@domain.com

In other email servers, it works fine to add an alias that catch all emails sent to other email addresses, than the ones explicity defined in the user db.

I have tried to set this as a shortname alias for a user. Both *@domain.com and @domain.com
Nothing works. Every test is returned with error saying that: Diagnostic-Code: X-Postfix; User unknown in virtual alias table

How could I make this work as expected ?

MacBook Pro, Mac OS X (10.6.2)

Posted on Mar 9, 2010 4:35 AM

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Answer 1

Mar 10, 2010 12:02 PM in response to Community User

In Server Admin, select Mail in the sidebar -> Settings -> General, then enable "Copy undeliverable mail to" and enter the email address you want undeliverables forwarded to.

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Answer 2

Mar 10, 2010 12:09 PM in response to Gordon Davisson

Hi Gordon

Yeah, I know of this, but there are 2 issues;
1) This deliver a copy of the message, but still reply to sender that the user is not known
2) I have several virtual domains and don't want catch all to catch all domains. I want a different account for each domain.

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Answer 3

Mar 10, 2010 9:29 PM in response to Community User

Multiple domains makes things a bit more complicated. I haven't tested this at all, but I think you could do it with a [regexp:|http://www.postfix.org/regexp_table.5.html] or [pcre:|http://www.postfix.org/pcre_table.5.html] format alias map (note: the reason you can't do it with the standard alias file is that it's stored in an exact-match-only database format). Try creating a file named /etc/aliases-pcre, with the line "/@domain\.com$/ catchall@example.com", then edit /etc/postfix/main.cf and add the line "alias_maps = hash:/etc/aliases, pcre:/etc/aliases-pcre" (you might want to use [aliasdatabase|http://www.postfix.org/postconf.5.html#aliasdatabase] instead of [aliasmaps|http://www.postfix.org/postconf.5.html#aliasmaps] -- I'm not entirely clear on the difference).

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Answer 4

jaydisc

Level 4

1,464 points

Mar 16, 2010 1:38 AM in response to Community User

You need to use postfix style virtual addressing and in /etc/postfix/virtual

@example.com usershortname

No regex required.

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Answer 5

Mar 16, 2010 3:08 AM in response to jaydisc

i jaydisc

That sound great and I tried that.
However, the log now comes with this message:
warning: database /etc/postfix/virtual_users.db is older than source file /etc/postfix/virtual_users

I have tried to look at the virtual_users.db, but it has special chars and I don't know how to edit this. Also tried to move it, to see if the system would recreate, but it didn't

Do you have any idéas ?

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Answer 6

jaydisc

Level 4

1,464 points

Mar 16, 2010 3:41 AM in response to Community User

Whenever you make changes to /etc/postfix/virtual, you need to convert it to virtual.db with:

sudo postmap /etc/postfix/virtual

and then you need to restart postfix:

sudo postfix reload

However, it doesn't sound like you have Postfix-style aliases set up. Check out pages 74-76 of the mail services manual. It explains how to enable Postfix-style and it even explains how to do domain-specific catch alls too (including recommending against them)

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