Suddenly can't receive or send any mail anymore

Maintenance
1

Hi guys

I have an MiaB installation that worked fine during a week. But now I can’t send or receive mail.
What happened?

I pasted the last few lines of the mail.err log here: http://snippeter.krizdelogi.be/public.php?id=179

Thanks in advance everyone!

Kriz De Logi

EDIT: //snippeter.krizdelogi.be/public.php?id=180 this is a mail I received from mailer-deamon (I don’t understand why there are other mail adresses that don’t have anything to do with my domains)

2

May 18 09:38:19 box opendkim[11783]: 08BC9A9A1A: key retrieval failed (s=mail, d=delogi.be): 'mail._domainkey.delogi.be' record not found

Looks like you are missing a DNS entry.

Also Out: 451 4.3.0 Error: queue file write error Means you have a permissions issue in the server.

3

I checked the DNS entries and all seem correct. Only the web entry is not set because I don’t want MiaB to handle my web requests.

4

Okay, I got it working again, but now I see my mail gets sent or received very slowly, so I had a look at mail.log and was surprised to see some unusual traffic. How can I block this?

May 19 10:29:16 box postfix/smtp[23191]: smtp-in.libero.it[213.209.1.129]:25: TLS cipher list "aNULL:-aNULL:ALL:!EXPORT:!LOW:+RC4:@STRENGTH:!aNULL:!RC4"
May 19 10:29:16 box postfix/smtp[23191]: looking for session smtp&libero.it&smtp-in.libero.it&213.209.1.129&&E1921C93DB68F76FA3600EDA96437A58A2F6D8E8C019DCCC3501890C76A3388E in smtp cache
May 19 10:29:16 box postfix/tlsmgr[25925]: lookup smtp session id=smtp&libero.it&smtp-in.libero.it&213.209.1.129&&E1921C93DB68F76FA3600EDA96437A58A2F6D8E8C019DCCC3501890C76A3388E
May 19 10:29:16 box postfix/tlsmgr[25925]: read smtp TLS cache entry smtp&libero.it&smtp-in.libero.it&213.209.1.129&&E1921C93DB68F76FA3600EDA96437A58A2F6D8E8C019DCCC3501890C76A3388E: time=1526718520 [data 1626 bytes]
May 19 10:29:16 box postfix/smtp[23191]: reloaded session smtp&libero.it&smtp-in.libero.it&213.209.1.129&&E1921C93DB68F76FA3600EDA96437A58A2F6D8E8C019DCCC3501890C76A3388E from smtp cache
May 19 10:29:16 box postfix/smtp[23191]: SSL_connect:before/connect initialization
May 19 10:29:16 box postfix/smtp[23191]: SSL_connect:SSLv3 write client hello A
May 19 10:29:16 box postfix/smtp[20413]: sitemail.everyone.net[216.200.145.235]:25: subject_CN=*.everyone.net, issuer_CN=thawte SHA256 SSL CA, fingerprint=3B:6A:BE:47:F5:F2:F9:20:1F:EE:AC:6F:DA:4C:4E:96, pkey_fingerprint=D5:8F:4C:F4:22:49:F4:51:2B:01:11:03:8C:A4:61:3B
May 19 10:29:16 box postfix/smtp[20413]: Trusted TLS connection established to sitemail.everyone.net[216.200.145.235]:25: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May 19 10:29:16 box postfix/smtp[22254]: 82BC1AD644: host mx.east.cox.net[68.1.17.3] refused to talk to me: 421 eastrmimpi311.cox.net cox 167.99.8.28 blocked - Error Code: CDRBL - Refer to Error Codes section at http://postmaster.cox.net/confluence/display/postmaster/Error+Codes for more information.

What are these domains exactly doing on my server?

Thanks in advance
Kriz

5

Ok. I just restarted everything over again. Hoping that everything becomes secure

6

Is your domain krizdelogi.be or delogi.be ?? Or are you hosting mail for both domains on your box?

7

I’m hosting both domains. Also dlds.be and vanparysenhof.eu