Hello, I updated mailcow to the new latest version this week but it seems it started blocking emails from Gmail, Yahoo throwing failure delivery message as: 554 5.7.1 This message does not meet our delivery requirements RSPAMD module shows the following. [upl-image-preview uuid=7d159707-a78d-4f5e-aa4a-4de4b6108c84 url=https://community.mailcow.email/assets/files/2025-02-05/1738731094-711306-screenshot-2025-02-05-at-101823-am.png alt={TEXT?}] I even tried adding @gmail.com and @yahoo.com in Domain settings Spam Filter whitelist but that also not taking any effect. If anyone can guide.

Emails from Gmail being blocked

mailcow-helper

Hello,

I updated mailcow to the new latest version this week but it seems it started blocking emails from Gmail, Yahoo throwing failure delivery message as: 554 5.7.1 This message does not meet our delivery requirements

RSPAMD module shows the following.

I even tried adding @gmail.com and @yahoo.com in Domain settings Spam Filter whitelist but that also not taking any effect.

If anyone can guide.

ETNyx

Well, sure you have reason to mangle your mails like this,..

mailcow-helper I even tried adding @gmail.com and @yahoo.com in Domain settings Spam Filter whitelist but that also not taking any effect.

did forum strip wildcard or you did it wrong?

ETNyx

Well what I can see is that e-mail come from IP 40.93.132.29 and this is not listed as Google’s (Gmail’s) IP, so i would guess this is spam pretending to be from Gmail, so i would guess it’s correct to block this as spam.

mailcow-helper

ETNyx I, myself is sending that email from my gmail account only. I also suspected that but don’t know anything about it.

esackbauer

mailcow-helper I, myself is sending that email from my gmail account only.

No. that IP is from Microsoft Exchange Online or Office 365. You probably did configure your client wrong so it sends gmail mails via the wrong SMTP server.

mailcow-helper

Actually I am using a Split Delivery scenario where for my domain first email will reach to Microsoft and using mail flow and connector, I am routing emails to my mailcow server.

If an account will exist on Microsoft it will send email to the account, if not then it will send the email to mailcow server. All external emails are working fine at the moment but don’t know why gmail, yahoo are getting rejected.

mailcow-helper

ETNyx

Yes, it was my mistake. When I tried with *@gmail.com it completely bypassed everything and emails started coming. I know this could be dangerous so I removed the same from Domain Whitelist.