Difference between revisions of "Managing Domains"

(clarify alias forwarding)
(5.0.12 policy daemon)
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=Additional=
 
=Additional=
 +
==out of office notifications===
 +
 
5.0.12+ allows some additional mapping of real to alias in order to:
 
5.0.12+ allows some additional mapping of real to alias in order to:
  
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</pre>
 
</pre>
  
 +
==single command==
  
5.0.16+ added the ability to do this in one command:
+
5.0.16+ added the ability to do this (above) in one command:
 
<pre>
 
<pre>
 
zmprov createAliasDomain(cad) {alias-domain-name} {local-domain-name|id} [attr1 value1 [attr2 value2...]]
 
zmprov createAliasDomain(cad) {alias-domain-name} {local-domain-name|id} [attr1 value1 [attr2 value2...]]
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zmprov cad aliasdomain.com realdomain.com zimbraMailCatchAllForwardingAddress @realdomain.com
 
zmprov cad aliasdomain.com realdomain.com zimbraMailCatchAllForwardingAddress @realdomain.com
 
</pre>
 
</pre>
 +
 +
 +
==Email to non-existant accounts===
 +
 +
Currently we automatically accept email for alias domains and then generate a bounce.  This has the potential for backscatter abuse and we'd like to close this hole for hosed and still be able to offer alias domains without adding aliases to each  account.
 +
 +
/opt/zimbra/conf/zmmta.cf smtpd_reject_unlisted_recipients 'yes' won't work with alias domains, so  it's defaulted to no. (Perhaps later we'll flip this.)
 +
 +
 +
However, 5.0.12+ contains a Policyd Daemon that helps those who host alias domains in ZCS. 
 +
To enable the policy daemon:
 +
zmlocalconfig -e postfix_enable_smtpd_policyd=yes
 +
postfix stop
 +
postfix start
  
  
  
 
[[Category:Pending Certification]]
 
[[Category:Pending Certification]]

Revision as of 20:38, 9 June 2009

Creating a Domain Alias

If you have a domain domain.com and you want the domain example.com to be an alias for it, so that sending mail to user@example.com is the same as sending mail to user@domain.com (delivered to the same mailbox), you can designate example.com as a domain alias when creating the domain. This example assumes domain.com already exists, but example.com does not.

Prior to ZCS 5.0.16

zmprov cd example.com zimbraDomainType alias zimbraMailCatchAllAddress @example.com zimbraMailCatchAllForwardingAddress @domain.com

ZCS 5.0.16 and later, a new create an alias domain command is available

zmprov createAliasDomain {alias-domain-name} {local-domain-name|id} [attr1 value1 [attr2 value2...]]

Relaying/Domain Forwarding

If you want the Zimbra server to relay all mail destined for a particular domain (say, example.com) to another mta (say, other-mta.domain.com), you can forward the domain.

zmprov
md example.com zimbraMailCatchAllAddress @example.com
md example.com zimbraMailCatchAllForwardingAddress @example.com 
md example.com zimbraMailTransport smtp:other-mta.domain.com

I think you can also do this as another way to make a sort of local domain alias:

zmprov
md example.com zimbraMailCatchAllAddress @example.com
md example.com zimbraMailCatchAllForwardingAddress @domain.com 
md example.com zimbraMailTransport lmtp:zimbra.domain.com

For non-zimbra domains, this might prove useful as well: Transport_Table_for_external_servers

Domain Catchall

If you want to set up an account "user@domain.com" to catch any mail not delivered to existing users in the domain "domain.com", you can configure the account as a domain catchall.

su - zimbra
zmprov modifyAccount user@domain.com zimbraMailCatchAllAddress @domain.com

If the users "john@domain.com", "webmaster@domain.com", and "xyznobody@domain.com" don't exist, and mail arrives for them, it will be delivered to the catchall account "user@domain.com". This will increase the amount of spam delivered, and can lead to being blacklisted. To remove the catchall from an email account, unset the catchall address:

zmprov modifyAccount user@domain.com zimbraMailCatchallAddress ""

Domain Masquerading

If you want mail from user@domain.com or user@zimbra.domain.com to appear to come from user@example.com, you can set the canonical address for the entire domain.

zmprov md domain.com zimbraMailCatchAllAddress @domain.com zimbraMailCatchAllCanonicalAddress @example.com
zmprov md zimbra.domain.com zimbraMailCatchAllAddress @zimbra.domain.com zimbraMailCatchAllCanonicalAddress @example.com

Additional

out of office notifications=

5.0.12+ allows some additional mapping of real to alias in order to:

A) Allow auth with alias domain addresses.

B) Send out-of-office notifications for alias domains.

zmprov md aliasdomain.com zimbraDomainAliasTargetId {zimbraId-realdomain.com}

single command

5.0.16+ added the ability to do this (above) in one command:

zmprov createAliasDomain(cad) {alias-domain-name} {local-domain-name|id} [attr1 value1 [attr2 value2...]]

cad sets zimbraDomainType, zimbraDomainAliasTargetId, & zimbraMailCatchAllAddress

(if you want to forward mails from aliasdomain.com to realdomain.com you need to add zimbraMailCatchAllForwardingAddress)

zmprov cad aliasdomain.com realdomain.com zimbraMailCatchAllForwardingAddress @realdomain.com


Email to non-existant accounts=

Currently we automatically accept email for alias domains and then generate a bounce. This has the potential for backscatter abuse and we'd like to close this hole for hosed and still be able to offer alias domains without adding aliases to each account.

/opt/zimbra/conf/zmmta.cf smtpd_reject_unlisted_recipients 'yes' won't work with alias domains, so it's defaulted to no. (Perhaps later we'll flip this.)


However, 5.0.12+ contains a Policyd Daemon that helps those who host alias domains in ZCS. To enable the policy daemon:

zmlocalconfig -e postfix_enable_smtpd_policyd=yes 
postfix stop
postfix start
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