Can not deliver messages to big guys

[narrok]

Hi!

I am totally new to Zimbra....

I have installed it, and everything works great, except that messages are bounced from some accounts (Gmail, hotmail, etc).

The error log shows:

"Oct 31 23:54:39 rocky postfix/smtp[16058]: C4B76F84E1: to=, relay=mx1.hotmail.com[65.54.188.72]:25, delay=1, delays=0.07/0.01/0.74/0.18, dsn=5.0.0, status=bounced (host mx1.hotmail.com[65.54.188.72] said: 550 DY-001 Mail rejected by Windows Live Hotmail for policy reasons. We generally do not accept email from dynamic IP's as they are not typically used to deliver unauthenticated SMTP e-mail to an Internet mail server. The Spamhaus Project maintains lists of dynamic and residential IP addresses. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help."

Oct 31 23:59:06 rocky postfix/smtp[17456]: 3A7B7F8529: to=, relay=alt1.gmail-smtp-in.l.google.com[209.85.222.48]:25, delay=62, delays=0.05/0.02/32/31, dsn=4.7.0, status=deferred (host alt1.gmail-smtp-in.l.google.com[209.85.222.48] said: 421-4.7.0 [200.104.80.105] Our system has detected an unusual amount of 421-4.7.0 unsolicited mail originating from your IP address. To protect our 421-4.7.0 users from spam, mail sent from your IP address has been temporarily 421-4.7.0 blocked. Please visit Bulk Senders Guidelines - Gmail Help 421 4.7.0 to review our Bulk Email Senders Guidelines. 14si9132020pzk.89 (in reply to end of DATA command))

Is there a fix around this ?

I know I could pay for an static IP, but if I do so, will it resolved my problem ? Alternatives ?

Thanks for your help !

[phoenix]

Originally Posted by narrok

Is there a fix around this ?

I know I could pay for an static IP, but if I do so, will it resolved my problem ? Alternatives ?

The problem is you're on a dynamic IP address as stated in the error message, yoy can either get a fixed IP or relay through your ISPs mail server: Outgoing SMTP Authentication - Zimbra :: Wiki