I have a problem, some email servers dont accept my emails.
email@example.com: host mail.delfzijlrp.nl[188.8.131.52] said:
550-Verification failed for firstname.lastname@example.org 550 Sender verify
failed (in reply to RCPT TO command)
That is what i get when i sent an email to another webserver.
And when i send to hotmail i get a email back that a part of the providers network is on a blacklist.
When i send to gmail, the email will get into the spam folder.
I checked aswell as my network provider and we cant find that this ip or subnet is blacklisted.
If i go to DNS configuration in the https://mail.stefanvt.nl/ interface and check them, everything comes back fine.
My mailserver ip is: 184.108.40.206
Im hosting this on my own server that runs in a datacentre.
Maybe someone can help me with this.