Email has suddenly stopped coming through

[rsthomas]

Due to a Server crash (http://forums.sentora.org/showthread.php?tid=12846), I had to reinstall everything from the Operating System up. It was all working fine for a week or so, and then emails suddenly were not getting received -- with no message indicating a problem.

Postfix main.cf
mydomain: admin.rstunlimited.company
myhostname: admin.rstunlimited.company

I am hosting Sentora on an inhouse server, and use https://freedns.afraid.org to manage DNS (for years).

Two sample domains:
rstmarine.com
cointernet.net

admin.rstunlimited.company subdomain 184.88.75.100. Maybe the attached files will help.

Postfix is running, but when I stopped it and tried to receive email there was no indication that it was down, but perhaps this is irrelevant.

Due to not being able to receive messages for the registered email address, would you mind forwarding replies to rsthomas@gmx.com.

Thanks in advance!!

[Me.B]

Check the warning here over you mail.rstunlimited.company it should resolve and it's missing.
https://intodns.com/rstunlimited.company
So try to recreate it.

[rsthomas]

I assume you are referring to:
MX name validity The MX records that do not seem valid hostname:
mail.rstunlimited.company
This can cause problems

I deleted and recreated the MX record for rstunlimited.company from my DNS service (10:mail.rstunlimited.company), with mail.rstunlimited.company still pointing to the A record of 184.88.75.100. Intodns.com still produced the same warning as before.

There must be something else going on...or off.

[fearworks]

I have replied to your newer thread regarding this here:

http://forums.sentora.org/showthread.php...5#pid33885

[rsthomas]

Thanks to the hero, fearworks, the issue has been resolved. Of course it was my own fault when I tried something new (which you guys will probably never do), but he straightened me out!