I sending emails by other SMTP server, using:
Normally postfix sending emails by specific relay server, but if I don't have line in sender_dependent_relayhost_maps for specified user, zimbra sending emails too. How can i disable this??
Zimbra should send email only if I have correct record in sender_dependent_relayhost_maps, for example:
email@example.com relay.host.comort --> OK, sending
#firstname.lastname@example.org relay.host.comort --> Error: Internal account only.
How can I do this. Thank you for your help.