Hi,
Probably that domain was involved in mass mailing in the past (mostly unsolicited). I don’t see other reason for which they needed mailgun in spf. Send an email to gmail, from another source which works perfectly and include the www.domain.com in the body. If still goes to spam, the domain is blacklisted in gmail. Marius. From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Tiemo Kieft Sent: Saturday, November 1, 2014 11:55 AM To: postfix-users@postfix.org Subject: Re: Mail getting flagged as spam Hi again, in context of "www" i had a customer inisting replace "www.example.com" with "example.com" in all mailheaders and indeed he was right that after the change newsletters to customers of our largest ISP no longer got tagged as spam - that was years ago, after that i continued to make this replace in any webscript and avoid "www." as primary name for any machine supposed to send mail (maybe here and there it get a small penalty suspecting another hacked webserver or so) I’ve added a new A record for mail.infinitesimal.nl and set the hostname of the machine to mail.infinitesimal.nl. Still the exact same problem persists, I’ve created a new Gmail account, and set a legitimate email to both of them. The @infinitesimal.nl is accepted but the @isogram.nl is flagged as spam. Unfortunately there is no real way to know why Google is behaving like this. Could it be a configuration error? — - Tiemo
