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Hey! I got this problem on my postfix server. It is working perfectly fine all can send'recieve mails out going and incoming. Then suddenly I cannot send to yahoo, gmail! The problems maybe the following: 1. the isp that the client is using is blocked by rbl's or some sort check it 2. the server is hacked compromised or the configuration is broken with unknown reason What if all is good still cannot send???!!!! Check this out! you have miss configured the client if you are using outlook check for the option server needs authentication if you are using sasl or other sort of login add the ip address of the client for example the public ip is 203.77.77.77 then add to postifx to allow 203.0.0.0/8 in networks this will fix your error

Right now Pay Pal is available here in the Philippines. I have used it to send and receive money. Also you can use alert pay like paypal. If you want to know how I can help you setup your paypal post a comment here.

Suddenly my girlfriend server goes wrong and with freaking errors. It is blocking Gmail!!! Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 5.7.1 Service unavailable; Client host [209.85.216.198] blocked using blah blah blah check check check Good thing I have a backup main.cf and just reloaded it and walah! no downtime :D

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1. Ip camera installation 2. Mail Server Installation 3. Computer Repair 4. Local Area Networking 5. Router Configuration / Sharing for PLDT, GLOBE, BAYANTEL and SMART BRO I offer other services please contact me at jmazaredo@gmail.com,leave a message in this chatroom, or call me at 09275605112

download the following as of 2009 this is a good combo antivir or free-av avast! malwarebytes superantispyware

http://www.how2forge.org/virtual-users-domains-postfix-courier-mysql-squirrelmail-ubuntu9.04 http://releases.ubuntu.com/9.04/ubuntu-9.04-desktop-i386.iso.torrent