Search found 12 matches

by booola
31 Oct 2019 19:35
Forum: Discussion
Topic: Getting spam from domains without DNS records
Replies: 10
Views: 5924

Re: Getting spam from domains without DNS records

Thank you so much for your support!
by booola
29 Oct 2019 14:51
Forum: Discussion
Topic: Getting spam from domains without DNS records
Replies: 10
Views: 5924

Re: Getting spam from domains without DNS records

The same result everywhere (work domain and also at home - different dns servers)

nslookup bulurx.com

Server: server.net.local
Address: 10.0.0.253

Non-authoritative answer:
Name: bulurx.com
Address: 80.249.161.171
by booola
23 Oct 2019 13:48
Forum: Discussion
Topic: Getting spam from domains without DNS records
Replies: 10
Views: 5924

Re: Getting spam from domains without DNS records

resolv.conf should be good. There is just IP addr. of local name server (based on SBS 2011), nothing else. If I do nslookup for domain mail addresses like @sdfhsu.co, @binaloodagri.co, etc. almost all of this crap is translated to 80.249.161.171. I've tested it also in some online tools and it is th...
by booola
21 Oct 2019 16:23
Forum: Discussion
Topic: Getting spam from domains without DNS records
Replies: 10
Views: 5924

Re: Getting spam from domains without DNS records

Here it is, I added some rules: smtpd_sender_restrictions = permit_sasl_authenticated, check_sender_access hash:/etc/postfix/sender_access, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unknown_reverse_client_hostname, reject_unknown_hostname, reject_invalid_hostname smtpd_helo_restri...
by booola
21 Oct 2019 06:16
Forum: Discussion
Topic: Getting spam from domains without DNS records
Replies: 10
Views: 5924

Re: Getting spam from domains without DNS records

Thank you pdwalker for response, it looks like it doesn't filter domains/addresses at all Oct 21 06:06:59 km postfix/cleanup[25729]: 0ECD61013A3: hold: header Received: from unstrung.tsharbach.co (unstrung.swingthelamp.com [69.94.158.71])??by our.email.com (Postfix) with ESMTP id 0ECD61013A3??for <o...
by booola
10 Oct 2019 08:59
Forum: Discussion
Topic: Getting spam from domains without DNS records
Replies: 10
Views: 5924

Getting spam from domains without DNS records

Dear Sirs, I would like to ask you why some of emails from "automaticaly generated" email addresses are not filtered (for example zojaaxzhfdxsebesta@ helpmmo.com , bohumilrmegazf@ pythoanywhere.co , etc. - both domains do not exist)? I set up postfix Restrictions on sends in HELO commands: check_hel...
by booola
22 Jun 2018 09:58
Forum: Discussion
Topic: New SPAM or back scatter?
Replies: 5
Views: 2096

Re: New SPAM or back scatter?

OK, that's good idea. Thank you for suggestion. So do you use configuration for example from here:
viewtopic.php?t=1875
by booola
21 Jun 2018 11:58
Forum: Discussion
Topic: New SPAM or back scatter?
Replies: 5
Views: 2096

Re: New SPAM or back scatter?

Hi guys, I've got probably same problem - many emails in OUTBOUND QUEUE: D7810102039 6793 Thu Jun 21 12:45:22 MAILER-DAEMON (connect to kidswintercoat.com[87.229.108.136]:25: Connection timed out) edvardpywfxhpcoufal@kidswintercoat.com AA084102018 6844 Thu Jun 21 11:58:51 MAILER-DAEMON (connect to a...
by booola
17 Oct 2017 08:18
Forum: Discussion
Topic: Unwanted outbound emails
Replies: 6
Views: 1865

Re: Unwanted outbound emails

Yes, it is. Thank you!
by booola
14 Oct 2017 12:49
Forum: Discussion
Topic: Unwanted outbound emails
Replies: 6
Views: 1865

Re: Unwanted outbound emails

Yes, that's correct, my fault. I thought that all mails from Exchange server go through another relay server.
So, the problem is whenever Exchange server wants to reply to non-existent address.
Thank you.
by booola
13 Oct 2017 05:09
Forum: Discussion
Topic: Unwanted outbound emails
Replies: 6
Views: 1865

Re: Unwanted outbound emails

I'm sorry, in outgoing queue. It is last version of eFa (3.0.2.5-HyperV) and the system is implemented for about 7 days. This morning there were 13 outbound mails, not only for X.X.X.X server mentioned in the first post. Mail Queue Viewer 09AC810067F 3308 Thu Oct 12 18:28:59 MAILER-DAEMON (host mx2....
by booola
12 Oct 2017 14:39
Forum: Discussion
Topic: Unwanted outbound emails
Replies: 6
Views: 1865

Unwanted outbound emails

Hi guys, we use eFa only for inbound mails and most of spam mails are filtered, but some crap goes (may be) through and is queued in Mail Queue on the same server Mail Queue Viewer -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient------- 01BC51005E8 6062 Thu Oct 12 08:33:48 MAILER-DAEMON (c...