Postfix – Page 2 – GEEKDECODER

Outlook or Mail AAAA Error

August 8, 2014 The Geek Decoder No Comments Email, Postfix

Trying to send email to an outlook.com account and getting this failure.


: Host or domain name not found. Name service error for
name=outlook.com type=AAAA: Host not found

Currently Microsoft doesn’t support IPv6 for hotmail.com, live.com or outlook.com. Postfix by default if IPv6 is enabled will attempt a IPv6 DNS lookup, the AAAA record, this will fail as Microsoft doesn’t publish AAAA records for either domain. Current work around is to disable IPv6 in Postfix’s configuration:


/etc/postfix/main.cf

Change:


inet_protocols = all


inet_protocols = ipv4

Then restart postfix:


service postfix restart

Helo incorrect?

July 17, 2014 The Geek Decoder No Comments Email, Postfix, Qmail

There’s a test available at http://cbl.abuseat.org/helocheck.html that will show you how the server is actually HELOing.

For Qmail:

# cat /var/qmail/control/me
mail.fromthepavilion.org

Postfix and Qmail Sending IP

May 12, 2014 The Geek Decoder No Comments Postfix, Qmail

Changing postfix to qmail which will use the primary IP of the server (216.55.xxx.xxx) to send messages for all accounts is a great way to change the sending IP to one that is not blacklisted.

Qmail default IP
default mail ip in /var/qmail/control/outgoingip