[SOLVED] More than one ISP account.

[Firstime]

Hi everybody!!!

I have a new problem and I need some help.

My problem is that I use Zimbra with my external SMTP ISP, with a lot of accounts.
This work for one account, for example I use my account firstime@myisp.com and I can send emails for external emails and Internals mails.
This function ok because I configured OUTGOING SMTP AUTHENTICATION with the data of my account. My ISP check email + user + pass.
Bt my problem is when I configure another account, for example user@myisp.com.
This user try to send an email for an external account and receive an email with this error:
SENDER ADDRES REJECTED: NOT OWNED BY USER: user.

My question is How I can to setup more than one account in Authentication, It is possible??

Many thanks to all.

[Firstime]

Postfix Configure Multiple ISP Client SMTP Authentication

[Krishopper]

Assuming you're talking about Zimbra Server, it sounds like your ISP restricts sending email and only allowing you to send email from which account is authenticated - so what you're trying to do probably won't work.

You may want to look at a service to relay email for you if you aren't able to send email to other SMTP servers directly from Zimbra with this limitation from your ISP. One such service that may work for you is MailHop Relay.