I have Ubuntu server which is more or less acting as a web and mysql server. There is no postfix or anything similar installed. With a help of Virtualbox there is also virtualised Ubuntu server which is acting like a mail server with a help of iredmail.
I use it for a project I'm a part of and mail server is used only for contacting clients (no more than 10 mails per day for now).
The problem is that we're blacklisted for sending spam and we also have been notified from ISP about that problem which forwarded me an example of send email. I checked logs on both servers and there was nothing sent other than from our team and to our clients. Just a couple of
Helo command rejected: need fully-qualified hostname
Relay access denied
There is no other computers in the network with installed mail clients or servers.
This is header of one of the spam mail sent
Received: from jhkbabkgjkceaej.meetgir.com (redacted.static.t-2.net [redacted]) by mtaig-mcd06.mx.aol.com (Internet Inbound) with SMTP id 444BD700000A7 for <email@example.com>; Thu, 16 Oct 2014 13:43:19 -0400 (EDT) Return-Path: <E8C3CE86-9F7E-4A9D-8BEF-30BDAC6E0E08@jhkbabkgjkceaej.meetgir.com> From: "Melanie Richards" <firstname.lastname@example.org> To: <email@example.com> References: <6588B419-1082-714E-2FAF-ECC392B86E3C@jhkbabkgjkceaej.meetgir.com> Subject: From a pleasant-looking neighbor girl... Date: Thu, 16 Oct 2014 21:44:48 +0200 Message-ID: <6588B419-1082-714E-2FAF-ECC392B86E3C@jhkbabkgjkceaej.meetgir.com> MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQKotpYqBnSwfJ0T5FucSHP5//9yxAKotpYq
Is there anything I can do to solve this problem? I appreciate your time and help. Thanks