Cannot receive or send emails

chernandez

Hi, I’ve installed mailcow in my server. I have 4 domains configured with apache2, and I would like configure mailcow for serve all them.

It is my dns config in cdmon for the main domain.

In the router I opened ports: 25, 587, 465, 993, 995, 80, 443, 8080 and 4433 (these last two are for webadmin mailcow).
I ran docker-compose, create domains, and mailboxes. But I have not been able to create the certificate since I already have them created in /etc/letsencrypt/archive/ and they are being used in apache2 to serve the web.

My IP is dynamic and blacklisted in SpamHaus, I wrote them for remove my ip from his list (I guess this is the reason because I cannot send emails for all the providers). But I cannot receive his email for confirmation because for other hand, I cannot receive emails and I don’t know why, or what I’m doing wrong. Please, someone can help me?

heavygale

How do you set PTR / rDNS for a dynamic IP? Without it now other server will accept your mails. -> Dynamic IP is not suited for a mailserver, you could only use a tansport server as SMTP proxy with a static ip.
MX record should be all you need to receive mail, doest it point to a a/cname-record wich points to your current IP address?

chernandez

Hi!
Yes, I have a dynamic IP. In Cdmon they have a free DNS service that looks each 3 minutes if the IP has been changed, with a cron implemented on my machine. SMTP proxy is it?

“doest it point to a a/cname-record wich points to your current IP address?”: Is an A register, is pointing to my domain (email.domain.com) , not against my IP, because cdmon doesn’t allow it.