Error maildrop already locked

Email user in my office complaint because she could not download email from MDaemon server. Error message in outlook is:

Task '192.168.0.25 - Sending and Receiving' reported error (0x800CCC92) : 'Your e-mail server rejected your login. Verify your user name and password in your account properties. Under Tools, click E-mail accounts. The server responded: -ERR access denied'

After changing user password end retry to send and receive again this error is still occur. And then I check log mail POP in MDaemon server. The log status is fail with this error message in log file:

Thu 2010-07-01 08:11:17: Session 1437; child 4
Thu 2010-07-01 08:11:15: Accepting POP connection from [172.19.5.31 : 1062]
Thu 2010-07-01 08:11:15: --> +OK mydomain.com POP MDaemon 9.0.6 ready
Thu 2010-07-01 08:11:16: <-- USER john Thu 2010-07-01 08:11:16: --> +OK john... User ok
Thu 2010-07-01 08:11:17: <-- PASS ****** Thu 2010-07-01 08:11:17: --> -ERR maildrop already locked
Thu 2010-07-01 08:11:17: POP session terminated, (Bytes in/out: 20/145)

Then I check the mail box of the user and I found there are more than 10 emails in user mail box. One of the email sizes is more than 8MB. I tried to delete this email but I could not delete because the email file was locked. To delete this email I must restart MDaemon server first.

Mail Rejected by Keyword

I received complaint from user that her mail was rejected by the receiver mail server.

The massages from mail server are:

Subject: Undelivered Mail Returned to Sender
This is the mail system at host mxwcom.263xmail.com.
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report.
You can delete your own text from the attached returned message.
The mail system
: host mxcom.263xmail.com[211.150.64.38] said:
mail rejected by keyword (in reply to end of DATA command)

Referring to that message I conclude that the content of email from the user contain keyword that is usually use by spam email. Then I checked the content of email and I found keyword "offering price" in the message.

I asked to the user to change keyword "offering price" in her email and resend the email to the recipient.

After changing "offering price" words with "quotation" and resending the email, then the email was sent successfully and no rejection from recipient email server.

Email sending error because of too many connections

There were many reason of email sending error. One of them is because of too many connections to the server. This is the sample MDaemon email server logs of sending mail failure because of too many connections to the mail server.

Sender user is: user@mycompany.com
Recipient user is: theuser@telkom.net

In this log there is line:

Fri 2010-03-12 07:41:33: <-- 421 #4.4.5 Too many connections to this host Fri 2010-03-12 07:41:33: --> QUIT
Fri 2010-03-12 07:41:33: Socket connection closed by the other side (how rude!)

This mean the recipient mail server could not receive email from user@mycompany.com because in the same time the server receipt too many connection (may be from other email server) that could not be handled.

MDaemon server (Sender user mail server) will automatically resend the mail from user@mycompany.com to theuser@telkom.net next time depend on the setting of MDaemon mail server.

Fri 2010-03-12 07:41:33: Session 8894; child 10
Fri 2010-03-12 07:41:31: Parsing Message
Fri 2010-03-12 07:41:31: From: user@mycompany.com
Fri 2010-03-12 07:41:31: To: theuser@telkom.net
Fri 2010-03-12 07:41:31: Subject: Kelebihan Pengobatan
Fri 2010-03-12 07:41:31: Message-ID:
Fri 2010-03-12 07:41:31: MX-record resolution of [telkom.net] in progress (DNS Server: 202.152.0.2)...
Fri 2010-03-12 07:41:31: * P=011 S=000 D=telkom.net TTL=(0) MX=[mx2.mail.plasa.com] {222.124.18.72}
Fri 2010-03-12 07:41:31: * P=011 S=001 D=telkom.net TTL=(0) MX=[mx1.mail.plasa.com] {222.124.18.71}
Fri 2010-03-12 07:41:31: Attempting MX: P=011 S=000 D=telkom.net TTL=(0) MX=[mx2.mail.plasa.com] {222.124.18.72}
Fri 2010-03-12 07:41:31: Attempting SMTP connection to [222.124.18.72 : 25]
Fri 2010-03-12 07:41:31: Waiting for connection...
Fri 2010-03-12 07:41:32: Connection established (192.168.0.25 : 2790 -> 222.124.18.72 : 25)
Fri 2010-03-12 07:41:32: Waiting for protocol initiation...
Fri 2010-03-12 07:41:32: <-- 421 #4.4.5 Too many connections to this host. Fri 2010-03-12 07:41:32: --> QUIT
Fri 2010-03-12 07:41:32: Attempting MX: P=011 S=001 D=telkom.net TTL=(0) MX=[mx1.mail.plasa.com] {222.124.18.71}
Fri 2010-03-12 07:41:32: Attempting SMTP connection to [222.124.18.71 : 25]
Fri 2010-03-12 07:41:32: Waiting for connection...
Fri 2010-03-12 07:41:32: Connection established (192.168.0.25 : 2798 -> 222.124.18.71 : 25)
Fri 2010-03-12 07:41:32: Waiting for protocol initiation...
Fri 2010-03-12 07:41:33: <-- 421 #4.4.5 Too many connections to this host. Fri 2010-03-12 07:41:33: --> QUIT
Fri 2010-03-12 07:41:33: Socket connection closed by the other side (how rude!)
Fri 2010-03-12 07:41:33: This message is 1 days old; it has 4 days left to get delivered
Fri 2010-03-12 07:41:33: SMTP session terminated (Bytes in/out: 94/12)

Email Failure Notice

One of user in my workplace forward me email problem. This is the content of mail message:


-----Original Message-----
From: MAILER-DAEMON@server6.rad.net.id [mailto:MAILER-DAEMON@server6.rad.net.id]
Sent: Wednesday, November 11, 2009 8:26 AM
To: user@mycompany.co.id
Subject: failure notice

Hi. This is the qmail-send program at server6.rad.net.id.
I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out.

:
user is over quota

--- Below this line is a copy of the message.

Return-Path:
Received: (qmail 5842 invoked by uid 89); 11 Nov 2009 01:25:52 -0000
Received: from unknown (HELO Firewall6.rad.net.id) (202.154.1.188)
by 0 with SMTP; 11 Nov 2009 01:25:52 -0000
Received: from mycompany.co.id (localhost [127.0.0.1])
by Firewall6.rad.net.id (Spam & Virus Firewall) with ESMTP id 7BCF2105198D2
for ; Wed, 11 Nov 2009 08:25:35 +0700 (WIT)
Received: from mydomain.com([xxx.xxx.xxx.xxx]) by Firewall6.rad.net.id with ESMTP id CFpZpHXywGwhCffP for ; Wed, 11 Nov 2009 08:25:35 +0700 (WIT)
Received: from userclient ([192.168.0.23])
by mycompany.co.id (mycompany.co.id)
(MDaemon PRO v9.0.6)
with ESMTP id md50001805217.msg
for ; Wed, 11 Nov 2009 08:29:25 +0700
From: "User"
To: "'Patrizia Pisciotta'"
Cc: "'ptsasbdg'" ,
,
"'SAS/Import General'"
,
"'Sara Palladino'" ,
"'Eric Herzum'"
Subject: RE: Information of Shipment dryer machine and accessories
Date: Wed, 11 Nov 2009 08:29:23 +0700
Message-ID: 0df5e7d8069842bc89d4f8f486fa7835@mydomain.com
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_000E_01CA62A9.134F9C60"
X-Priority: 1 (Highest)
X-MSMail-Priority: High
X-Mailer: Microsoft Outlook, Build 10.0.2627
Importance: High
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4325
In-Reply-To: <3a0f6c8316e28647a31b3177ae0b17e40199b0414584@mailsrv.vidaleinternationa>
X-Spam-Processed: mydomain.com, Wed, 11 Nov 2009 08:29:25 +0700
(not processed: message from valid local sender)
X-MDRemoteIP: 192.168.0.23
X-Return-Path: user@mycompany.co.id
X-Envelope-From: user@mycompany.co.id
X-MDaemon-Deliver-To: ptsasbdg@rad.net.id

This is a multi-part message in MIME format.

------=_NextPart_000_000E_01CA62A9.134F9C60
Content-Type: text/plain;
charset="Windows-1252"
Content-Transfer-Encoding: quoted-printable



I could not solve this problem because this problem is in external side. This is because the space of recipient already reach maximum quota of user space. User must download all email in his server mailbox to empty the mail box.

Answers Problems Email Blocklist

Today I received a reply email from Online Forefront Security for Exchange & Exchange Hosted Archive Support on my email to them to delete the mail server IP address in the office where I work.

It took 2 days to wait for an email response from them since I sent 13 October 2009.

Email from them is that they've removed the ip address of our mail server from their list and block list takes 2 hours to activate it.

This is the content of their email:


Below is an update for your support incident. You may reply to this e-mail or visit our Support Web Site if you wish to respond or check for further status.

Thank you for allowing us to be of service to you.

Click here to visit our Support Web Site. (link to web site)

Subject
(Ip-address-in block)

Response (Kirk Goodman)
Hello,

This IP has been reviewed and was removed from the block list. Note that there is a small period of 1-2 hours after delisting is granted until all of our servers have been propagated with the new change. As long as the majority of traffic from this IP to our customers is not filtered as spam, messages will be allowed to flow uninterrupted through our network. If it is discovered to be spamming again in the future, relisting is likely to occur, and it will be more difficult to be removed from the list.

We will now be closing this case. If you have any further concerns, please reply to this email.

Thank you,
Kirk Goodman
Delisting Department

Mail Complaint

Today there is a user complaint for failing to send an email to the address .... @ Its.jnj.com. The transcript of his session (the log of the MDaemon server) is like this:

--- Session Transcript ---
Mon 2009-10-12 16:30:02: Parsing Message
Mon 2009-10-12 16:30:02: From: d
Mon 2009-10-12 16:30:02: To: ....@its.jnj.com
Mon 2009-10-12 16:30:02: Subject: =?utf-8?Q?RE:_=C2=81yURGENT=C2=81=E2=80=A2UPDATE=C2=81zOur_Order_No._R10
0?= =?utf-8?Q?7_dated_June_30=2C_2009_of_400_vials_of_REC_to_Indonesia?=
Mon 2009-10-12 16:30:02: Message-ID:
Mon 2009-10-12 16:30:02: MX-record resolution of [its.jnj.com] in progress (DNS Server: 202.152.0.2)...
Mon 2009-10-12 16:30:02: * P=020 S=000 D=its.jnj.com TTL=(23) MX=[mail.global.sprint.com] {216.32.180.22}
Mon 2009-10-12 16:30:02: Attempting MX: P=020 S=000 D=its.jnj.com
TTL=(23) MX=[mail.global.sprint.com] {216.32.180.22}
Mon 2009-10-12 16:30:02: Attempting SMTP connection to [216.32.180.22 : 25]
Mon 2009-10-12 16:30:02: Waiting for connection...
Mon 2009-10-12 16:30:03: Connection established (192.168.0.25 : 3206 -> 216.32.180.22 : 25)
Mon 2009-10-12 16:30:03: Waiting for protocol initiation...
Mon 2009-10-12 16:30:04: <-- 220 VA3EHSMHS033.bigfish.com Microsoft ESMTP MAIL Service ready at Mon, 12 Oct 2009 09:26:24 +0000 Mon 2009-10-12 16:30:04: --> EHLO sender-address-domain
Mon 2009-10-12 16:30:05: <-- 250-VA3EHSMHS033.bigfish.com Hello [ip-sender]
Mon 2009-10-12 16:30:05: <-- 250-SIZE 157286400 Mon 2009-10-12 16:30:05: <-- 250-PIPELINING
Mon 2009-10-12 16:30:05: <-- 250-ENHANCEDSTATUSCODES Mon 2009-10-12 16:30:05: <-- 250-STARTTLS
Mon 2009-10-12 16:30:05: <-- 250-AUTH Mon 2009-10-12 16:30:05: <-- 250-8BITMIME
Mon 2009-10-12 16:30:05: <-- 250-BINARYMIME Mon 2009-10-12 16:30:05: <-- 250 CHUNKING Mon 2009-10-12 16:30:05: --> MAIL From:<> SIZE=45474 Mon 2009-10-12 16:30:06: <-- 250 2.1.0 Sender OK
Mon 2009-10-12 16:30:06: --> RCPT To:<.......@its.jnj.com>
Mon 2009-10-12 16:30:07: <-- 550 5.7.1 Service unavailable; Client host [ip-sender] blocked using Blocklist 1, mail from IP banned; To request removal from this list please forward this message to delist@messaging.microsoft.com. ----

From this log We can conclude that the ip-address of the mail sender has been blocked by the recipient email server. In order to unblock ip address from the email sender (sending emails) then the mail server administrator must send a request to the email address delist@messaging.microsoft.com