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Old 5th October 2011, 20:20
maxtorzito maxtorzito is offline
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Join Date: Aug 2011
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Falko i change the /etc/postfix/ and in the option relayhost, i set this:
relayhost =

where is mi ISP provider, now some emails from my domain to gmail arrived OK, but sometimes others don't and receive this email:

The following message to <> was undeliverable.
The reason for the problem:
5.3.0 - Other mail system problem 550-"5.7.1 [] The IP you're using to
send mail is not authorized to\n5.7.1 send email directly to our servers. Please use
the SMTP relay at your\n5.7.1 service provider instead. Learn more at               

i did not change my DNS, and i change the relayhost line because im desperate and i don't know what more i can do!!

i attach my file as txt.

My ISP said me they set de reverse DNS:

do i have to do something with this? do i have to create a dns in ISPConfig? what kind of dns? how?

Thaknk for your patience
Attached Files
File Type: txt main.txt (28.5 KB, 98 views)

Last edited by maxtorzito; 5th October 2011 at 22:46.
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