Postfix/Dovecot: Can't receive external eMails, but I can send to an external address
 

Hello community!

I search the settings, where I can fix my problem... Actually I can send an eMail to each address, which I want.

If I answer to this eMail, I can't fetch this mail with a client. Reason therefore is - so I think - an blocked receiver list.

What do I have to do, that I can receive eMails from external addresses?

If you want or need some config files, I can post them.

I hope, somebody can help me. :)

Can you send mail between local users on your server and get them with your client.
If no then you need to fix your local setup (or your client).

If yes then you need to look at how you are receiving your mail.
Do you have correct DNS (MX and A records pointing to your server)?
Is your ISP / firewall allowing inbound traffic on port 25?

Ah, okay. I found the error.

I forgot the smtpd_recipient_restrictions "permit"... Now it works fine. :)