If you have ever replied to the working sender @ grinta.net, receiving messages from that sender in Inbox @ Gmail is not relevant. The sender @ grinta.net is whitelisted in the current Gmail account.
Usually, the descriptive banner displayed for messages in Web Spam folder helps to identify the cause: - content similar to spam => change the content when you test. - If you use any url shortener (public URL that can be exploited) in your body => remove them or remove any URL during tests. - complaints from multiple recipients => historical reputation of the sending source is bad. - phishing, suspicious domain etc. - Check headers for spf=pass, dkim=pass. "v=spf1 mx ~all" should be more appropriate (than "v=spf1 a ~all") since you have only one email server zed.grinta.net acting as MX and sending server, not any A host in the DNS. Marius. -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Daniele Nicolodi Sent: Monday, July 27, 2015 10:52 AM To: postfix-users@postfix.org Subject: Re: Going through Google spam filters On 26/07/15 22:43, Wietse Venema wrote: > Daniele Nicolodi: >>>>> Maybe this helps: >>>>> >>>>> Go to your Mail settings and Accounts tab and add the address >>>>> you are forwarding from to 'Send mail as'. This is a new feature >>>>> from user requests, where Gmail will detect that you forwarded >>>>> from that account and help prevent displaying a phishing warning. >>>>> >>>>> https://support.google.com/a/answer/175365?hl=en >>>> >>>> Hello Wietse, >>>> >>>> thanks for your reply. However, this is not the problem. >>>> >>>> Maybe I was not clear in my explanation: I'm nor trying to forward >>> >>> You did not try it. Good for you. >> >> Hello Wietse, >> >> I may have dismissed what you proposed a bit too quickly but I don't >> really understand how setting this option for a test account will affect >> my ability to send email to other Gmail accounts. > > Based on this: > > "Currently I'm able to send emails to my address @gmail.com > from the email address I'm currently using without having them > classified as spam, but not from any email address having a > different local part." > > The problem is that different accounts in your domain receive > different treatments, when they send mail to one Gmail account. > > I didn't read that as a problem sending mail to different Gmail > accounts. Sorry, I should have been more clear on the fact that this is the easy way I have to diagnose the problem. I know that most of the emails that I send from my domain to Gmail accounts are classified as spam. Only the recipients that (in a way or another) have my address whitelisted receive them in their inbox. > In any case, I agree that you need to clean up your DNS, so that > the Received: header shows zed.grinta.net as the sending host, not > grinta.net. > > Definitely: > grinta.net. IN MX pref zed.grinta.net. > zed.grinta.net. IN A 109.74.203.128 > 128.203.74.109.in-addr.arpa. IN PTR zed.grinta.net. > > Maybe: > grinta.net. IN A 109.74.203.128 > > Not: > 128.203.74.109.in-addr.arpa. IN PTR grinta.net. I fixed that, the reverse pointer took a while to propagate, it should be fine now. Thanks for your help. Cheers, Daniele
