I am using Zimbra opensource ed Release 5.0.10_GA_2638 on Ubuntu server. I have a static IP. I am able to send mails to external corporate mail ids but I could not able to send mail to GMAIL, YAHOO & HOTMAIL. I am getting the following message from them. If any body had come across this issue please help me out in resolving it.
<@hotmail.com>: host mx3.hotmail.com[184.108.40.206] 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. Email/network admins, please
visit MSN Postmaster for email delivery information and support
(in reply to MAIL FROM command)
<@gmail.com>: host gmail-smtp-in.l.google.com[220.127.116.11] said:
550-5.7.1 [18.104.22.168] The IP you're using to send mail is not
authorized to 550-5.7.1 send email directly to our servers. Please use the
SMTP relay at your 550-5.7.1 service provider instead. Learn more at
http://mail.google 550 5.7.1 .com/support/bin/answer.py?answer=10336
11si3389187pzk.115 (in reply to end of DATA command)