Email server can send internal, but messages never arrive at external recipients
- by Chase Florell
I'm running MailEnable on my server, and have been for many years. Recently we had an attack on our server, and I was able to close the hole.
Since then, our mail server doesn't seem to be sending mail out.
If I send an email from myself to another account hosted on the server, the email arrives as expected.
If I send an email from my gmail account to my business account, the email also arrives as expected
The problem comes when I send from my business account to an external domain
I tried the following
Gmail.com
Hotmail.com
Shaw.ca
When I send to any of the above
The message leaves my client as expected,
The logs appear to accept and forward on the message
The SMTP outbound que is empty
The message never arrives
I have checked our domain with
mxtoolbox.com
senderbase.org
And neither of them are reporting any problems with our domain.
I have ensured that port 25 is open (along with the other standard ports)
Here is one of the log entries from the SMTP connector
11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 220 mx1.example.com ESMTP MailEnable Service, Version: 6.81--6.81 ready at 11/05/13 12:10:00 0 0
11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 EHLO EHLO ASSP.nospam 250-mx1.example.com [127.0.0.1], this server offers 6 extensions 159 18
11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 EHLO EHLO ASSP.nospam 250-mx1.example.com [127.0.0.1], this server offers 6 extensions 159 18
11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH AUTH LOGIN 334 VXNlcm5hbWU6 18 12
11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH {blank} 334 UGFzc3dvcmQ6 18 26 [email protected]
11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH Y29sb25lbGZhY2U= 235 Authenticated 19 18 [email protected]
11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 MAIL MAIL FROM:<[email protected]> 250 Requested mail action okay, completed 43 31 [email protected]
11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 RCPT RCPT TO:<[email protected]> 250 Requested mail action okay, completed 43 35 [email protected]
11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 DATA DATA 354 Start mail input; end with <CRLF>.<CRLF> 46 6 [email protected]
Here are the headers of the sent message
X-Assp-Version: 1.7.5.7(1.0.07) on ASSP.nospam
X-Assp-ID: ASSP.nospam 78601-04523
X-Assp-Intended-For: [email protected]
X-Assp-Envelope-From: [email protected]
Received: from [10.10.1.101] ([68.147.245.149] helo=[10.10.1.101]) with
IPv4:587 by ASSP.nospam; 5 Nov 2013 12:10:00 -0700
From: Chase Florell <[email protected]>
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
Subject: Test Message
Message-Id: <[email protected]>
Date: Tue, 5 Nov 2013 12:10:18 -0700
To: Chase Florell <[email protected]>
Mime-Version: 1.0 (Mac OS X Mail 7.0 \(1816\))
X-Mailer: Apple Mail (2.1816)
.
Where else can I check to see if there is something broken? What could cause a problem like this whereby the message appears to send, but never arrives, and never returns a bounce?
