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Thread: postfix and MX records

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just followed guide on how setup ubuntu 10.04 server + postfix here:
hxxp://www.howtoforge.com/virtual-users-domains-postfix-courier-mysql-squirrelmail-ubuntu-10.04

ports 110, 143, 25 forwarded on router lan ip of mailserver.

postfix settings
hostname: server1.mydomain.com
example email: user@mydomain.com

can receive emails in outlook, if sent mailserver using:
mailx user@mydomain.com

however, external emails hotmail.com user@mydomain.com never arrive.

i'm thinking because of dns host records domain. here's have.

host records
host name = @
address = public ip
record type = address

host name = server1
address = public ip
record type = address


email settings
host name = @(none)
record type = mx
address = server1.mydomain.com



input?

thanks!

mx record isn't necessary in case. need when it's different record (mail.domain.com example) or when domain has multiple mail servers. if there's no mx, sender's mail server use a.

tcp port 25 of mail server reachable internet? can use online service http://openportchecker.com/ find out if you're not sure.

p.s. btw, don't forget secure mta before before opening port 25. read this howto example.


Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [ubuntu] postfix and MX records


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