[SOLVED] Use alternate SMTP for webmail while leaving Zimbra SMTP running

[craigk5n]

Hi all,

I would like the Zimbra webmail app to send outgoing mail to a different SMTP server and port, which would then proxy/forward the request back to the Zimbra SMTP on port 25 after doing some of its own processing, logging, etc.. I don't see a way to do this in the admin settings UI.

[craigk5n]

That's too bad. It would have really helped out our implementation. Thanks for the response.

[lytledd]

I would like the Zimbra webmail app to send outgoing mail to a different SMTP server and port, which would then proxy/forward the request back to the Zimbra SMTP on port 25settings UI

This can be done in the Admin Portal, under:

Global Settings
MTA
Web mail MTA Hostnames

I put our ASSP ip address in instead of the hostname. ASSP sends the mail back to Zimbra's DMZ IP address after SPAM processing.

Doug