Difference between revisions of "Exporting all addresses"
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| − | {{Archive}}{{WIP}}Exporting all addresses (mailboxes, aliases and distribution lists) is a vital tool if you have a backup MX and only want it to accept email for valid recipients. One reason for that is to stop spammers who simply use a dictionary of common names to generate recipient email addresses which would flood a backup MX with undeliverable email. Some anti-spam providers (e.g. Postini) have automatic provisioning processes for making this possible. | + | {{BC|Community Sandbox}} |
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| + | <div class="col-md-12 ibox-content"> | ||
| + | =Exporting all addresses= | ||
| + | {{KB|{{Unsupported}}|{{ZCS 7.0}}|{{ZCS 6.0}}|}} | ||
| + | {{Archive}}{{WIP}} | ||
| + | Exporting all addresses (mailboxes, aliases and distribution lists) is a vital tool if you have a backup MX and only want it to accept email for valid recipients. One reason for that is to stop spammers who simply use a dictionary of common names to generate recipient email addresses which would flood a backup MX with undeliverable email. Some anti-spam providers (e.g. Postini) have automatic provisioning processes for making this possible. | ||
Revision as of 18:19, 11 July 2015
Contents
Exporting all addresses
Exporting all addresses (mailboxes, aliases and distribution lists) is a vital tool if you have a backup MX and only want it to accept email for valid recipients. One reason for that is to stop spammers who simply use a dictionary of common names to generate recipient email addresses which would flood a backup MX with undeliverable email. Some anti-spam providers (e.g. Postini) have automatic provisioning processes for making this possible.
A naive process of extracting mailboxes looks like this:
/opt/zimbra/bin/zmaccts | grep 'active' | egrep -v '^\W+' | awk '{print $1}'
Unfortunately, this doesn't give distribution lists and aliases, so a more sophisticated approach is necessary, for which there is no specific tool and requires using the ldap tool thus:
/opt/zimbra/openldap/bin/ldapsearch -LLL -x -D"`/opt/zimbra/bin/zmlocalconfig -s zimbra_ldap_userdn | \
awk '{print $3}'`" -w"`/opt/zimbra/bin/zmlocalconfig -s zimbra_ldap_password | \
awk '{print $3}'`" -H `/opt/zimbra/bin/zmlocalconfig ldap_url | \
awk '{print $3}'` $* | \
grep ^mail | \
awk '{print $2}' | \
sort > zimbra_recipients.list
If your backup MX is exim, then you need to add the following to the config file:
accept local_parts = /etc/exim/zimbra_valid_emails.list domains = +relay_to_domains deny
The list of recipients needs to be converted to a form that exim will process, e.g.
sed -e 's/^/^/' -e 's/\./\\\./' -e 's/@.*$/$/' > exim_valid_emails.list < zimbra_recipients.list
More Methods
More methods here:
