I have installed mailEnable on my own dedicated server and did some setup. Webmail is working. I can receive emails and also send email but the sent mails fail to reach to some mail servers. Sending email to gmail, yahoo etc. is OK but sent mails to other small companies are not being delivered. We receive no error when sending emails but target persons say that there was no mail is being received (even spam). Is there some incorrect settings in our DNS settings or dmarc policy or I should check something else?
Here is dns settings for my domain
- FQDN: example.com
- FQDN of mail server: webmail.example.com.
two txt records:
dmarc record (txt):
- record name: _dmarc
- FQDN: _dmarc.example.com
- text: v=DMARC1;p=none;rua=mailto:firstname.lastname@example.org;fo=1
- host: webmail
- FQDN: webmail.example.com
- IP address: 22.214.171.124 (this is sample)