Email Issue - Plesk?

[LAM09]

Hi - still having a weird issue with emails & webmail

I cannot get emails to work on a domain

The DNS CHECK SAYS

CheckDNS.NET is asking root servers about authoritative NS for domain
Got DNS list for 'site.com' from ns2.nic.uk or ns2.nic.uk
Found NS record: ns.site.com[195.xxx.xxx.xxx], was resolved to IP address by ns2.nic.uk
Found NS record: ns2.site.com[195.xxx.xxx.xxx], was resolved to IP address by ns2.nic.uk
Domain has 2 DNS server(s)

CheckDNS.NET is verifying if NS are alive
DNS server ns.site.com[195.xxx.xxx.xxx] is alive and authoritative for domain site.com
DNS server ns2.site.com[195.xxx.xxx.xxx] is alive and authoritative for domain site.com
2 server(s) are alive

CheckDNS.NET checks if all NS have the same version
All 2 your servers have the same zone version 1294862776

CheckDNS.NET verifies www servers
Checking HTTP server www.site.com [195.xxx.xxx.xxx]
HTTP server www.lsite.com[1195.xxx.xxx.xxx] answers on port 80
Received: HTTP/1.1 200 OK (Server: Apache/2.2.3 (CentOS)) 52ba

CheckDNS.NET tests mail-servers
Domain site.com has only one mail-server
Checking mail server (PRI=10) mail.site.com [195.xxx.xxx.xxx]
Mail server mail.site.com[195.xxx.xxx.xxx] answers on port 25
<<< 220 vvps-xxx.site.com ESMTP Postfix
>>> HELO www.checkdns.net
<<< 250 vvps-8xxx.site.com
>>> MAIL FROM: <[email protected]>
<<< 250 2.1.0 Ok
>>> RCPT TO: <[email protected]>
<<< 250 2.1.5 Ok
>>> QUIT
Mail server mail.lsite.com [195.xxx.xxx.xxx] accepts mail for site.com
All MX are configured properly

So all is OK here

IN PLESK
- in Domain > Mail Accounts > Mail Settings > Activate mail service on domain is checked/activated & webmail is set to Horde
- there are two email accounts on the domain
- If I click on webmail, I can access the webmail

BUT THE PROBLEM
- If I send an email to either of the accounts - they bounce back. The error says

<[email protected]>: Host or domain name not found. Name service error for
name=mail.domain.com type=A: Host not found
Reporting-MTA: dns; vvps-myserver.domain.com
X-Postfix-Queue-ID: 368D2A5165D
X-Postfix-Sender: rfc822; [email protected]
Arrival-Date: Wed, 12 Jan 2011 22:21:40 +0000 (GMT)

Final-Recipient: rfc822; [email protected]
Original-Recipient: rfc822;[email protected]
Action: failed
Status: 5.4.4
Diagnostic-Code: X-Postfix; Host or domain name not found. Name service error
for name=mail.domain.com type=A: Host not found

So why are the emails failing? Any clues anyone?

ALSO - I can send emails out from the domain via webmail. But if I click reply, they bounce back. So I can only send not receive.

 

[IgorG]

First of all try common steps for fixing all mail problems:
- Rebuild mailsettings with
# /usr/local/psa/admin/sbin/mchk --with-spam
- Try to reproduce problem again and investigate /usr/local/psa/var/log/maillog