Can recieve emails but cannot send outbound emails from outlook client


I have installed Webmin/Virtmin on Centos 5. I can recieve emails but cannot send out any emails. I know its some configuration on the email server which should permit my IP address or domain to relay email but I cant find that.

I can send outbound email from the user mailbox on the server through Webmin/Virtmin.


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yaminz66Connect With a Mentor Author Commented:
This has been resolved. Basically it was blocked by the ISP.
georgekrajConnect With a Mentor Commented:
you should configure either postfix or sendmail MTA server on the system
yaminz66Author Commented:
They are already installed and configured on the server, as I said I can send an outbound email from within the user mailbox on the server but not the Outlook client remotely.
georgekrajConnect With a Mentor Commented:
I'm not sure whether you configured sendmail or postfix MTA. If it is sendmail, make sure the following change has been done.

DAEMON_OPTIONS(`Port=smtp,Addr=, Name=MTA')dnl" line to be


You need to configure SMTP-AUTH in your MTA server. Please refer the links below.

yaminz66Author Commented:
Because as it states the emails were blocked by the ISP
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