On 27/02/2018 11:23, Mario Jorge Lima wrote:
Hello,
I will explain what I need to know.
I have 3 Servers:
1) One of them is just a Domains Server.
2) The other two are Mailboxes Servers. They have the email accounts
for all the Domains from the first Server.
All these mailboxes' POP and SMTP are accessed through the Server address:
mail.domainnamea.com.
mail.domainnameb.com.
mail.domainnamec.com.
and so on.
If someone who accesses my Roundcube, fill the Server field with any
other POP Server name elsewhere, he will read those emails. How to
avoid it, so that only mailboxes in one of my two Mailboxes mentioned
above can be accessed?
Perhaps an outbound iptables firewall rule, so prevent the roundcube
server from accessing any POP3 / IMAP server other than your servers?
Thanks a lot.
Mario./
___________________________
Mario Jorge Lima
[email protected]
OBS: Eventualmente nao acentuo algumas palavras do Portugues, para
evitar bugs na recepcao dos emails.
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