Good morning, can you imagine why my mailserver can't deliver mails to some email-addresses? For example I can't sent mails to Hotmail, Freenet, Yahoo, Outlook and see more...

Usual suspects:
- SPF, DKIM, DMARC
- Make sure you're not running an open relay
- MS/Outlook are particularly strict anyway

@d4ng3r0u5 I did all checks on those and they were all good. 🤔

Blacklists? Reverse DNS entries correct (and matching HELO)? Is your service just new and therefore lacking reputation?

@d4ng3r0u5 the last one!!! Else I did all checks you mentioned. 🤔

I could be wrong but doesn't @Linux like mail servers?

@Wack
You bet

@Divisionbyzero
Mind sharing the domain name that you are using? You can send it to me at linux@linux.pizza

@Linux message send.

@Divisionbyzero
I did not even recieve the envelope :) I guess your mailserver has really bad rep.
Try send to
xenu@selea.space

@Linux what? I wrote from Gmail... 😂😅

@Divisionbyzero
Really? Have not gotten anything, sure that you spelled it correctly?
Btw, I am om riot, we can talk there :)

@Linux I'm sure. Will chat you in Riot

@Linux Riot you say, here I come 😛

Oh no! This is how the story ends? c'mon, keep us updated!

@DataJockey Sensei @Linux checked my domain and found that my ISP is one which has bad repo. Also hosting the mail system on the same server where the website is located and which sends emails too, was a bad idea.
I probably will host a cloud server for mailing stuff in some time with Iredmail.

And they spammed happy until the end of the internet. The end.

@Divisionbyzero We use a combination of SendGrid (for our membership portal) and MailChimp (for large blasts) if you're interested. Both fully support using your own domain with SPF/DKIM etc, and if you think you'll be a high-volume (and responsible) sender with SendGrid at least you can get a dedicated IP.

@Divisionbyzero many tanks! <3
..now i can die.