MX Linux Forum

jp88
Diamond Product Expert
Volunteer helper in Google supervised forums. Not a Google employee.
Apr 25, 2019

If your domain is a G Suite/Google Apps account, the domain administrator usually has access to 24/7/365 support from Google - see this page. Non G Suite users, or users of free consumer "@gmail.com" accounts, cannot be helped by using that link.

G Suite accounts can also use https://toolbox.googleapps.com/apps/checkmx/, and the helpful links there.

Otherwise, if some, all, or most of your emails to Gmail accounts are being classified as spam at the Gmail end, or Google are blocking your domain, or Google give a warning to the recipient, or if in some cases your mail is delayed before reaching Google at the last hop, or if (again in some cases) your mail is delayed internally at Google, you will need to comply with the Bulk Sender's Guidelines at https://support.google.com/mail/answer/ ... 3305764358 (Note: this page is badly named, it applies to ALL domains sending to GMail and G Suite accounts.)

In particular, pay attention to:-

Authentication & Identification
Subscription
Unsubscribing
Format
Delivery
Third-Party Senders
Affiliate Marketing Programs

(these above links in blue are "clickable")

Changes to MX records may take up to 72 hours to filter through the Internet.

Also check your TLS https://www.checktls.com/TestReceiver Google require at least TLSv1.2

If the issue is with forwarded mail, you should read
Best ways to forward mail to Gmail.

Another possibly helpful link https://glockapps.com/blog/remove-ip-ad ... blacklist/

If you are receiving a message "this message is not RFC 5322 compliant:", then you need to read, and comply with https://support.google.com/mail/?p=RfcM ... nCompliant

If other Google users have marked your mail as Spam, Google will have learnt from this. You need to get your mail marked as "non spam".

Please also check your emails (both body and signature) for spammy content e.g. lots of exclamation marks; "must read"; attention getting, large and/or gaudy coloured text; text the same colour as the background; tiny text; [almost] zero height images; links hidden under text, images or links with a different URL; etc. All or any of these may mark you as a spammer by Google.

There are Postmaster tools to help you if a bulk mail sender:- https://support.google.com/mail/answer/ ... 3305764358, and Postmaster FAQ https://support.google.com/mail/answer/ ... 3305764358

If your IP is marked as a Spam Hoster, you will also need to clean this up with your service provider. Google maintain their own lists, but this posting certainly cannot help you. Removal from a spam hosting list can take up to four weeks to filter through. Even after that, Google may treat you account very cautiously, until proven as non spammer.

http://goo.gl/FQXdHx is helpful for bulk email senders and marketers. And this link https://www.unlocktheinbox.com/resource ... ntication/ can be very useful as well.

If your domain previously had a bad reputation, and the problems hopefully have now been corrected, Google may treat your mail with caution for some time, until your credentials are established to their satisfaction.

And, as a matter of interest https://support.google.com/mail/answer/1366858?hl=en helps recipients understand why mail is flagged as Spam by Gmail. Also see https://www.whatcounts.com/2012/03/gmai ... marketers/

After doing all this, and the problems persist, you can use https://support.google.com/mail/contact/msgdelivery All errors need to be corrected, before doing this.

mxtoolbox has some good paid services available to help with your email delivery. www.mxtoolbox.com

Finally, as we can only give general advice (unless your domain is a G Suite account), you may need to seek further help, if necessary, from your domain hoster, or employ the services of an IT contractor.

Repeating - G Suite accounts generally (if qualified) have 24/7/365 support for the domain administrator - see this page. Non G Suite users, nor users of free consumer "@gmail.com" accounts, will not be helped in this link.


Any 'phone numbers you find on the Internet, or posting here, pretending to be Google support, are scammers. They cannot help, may hack you, and/or install ransomware. https://support.google.com/faqs/answer/2952493?hl=en