error 421, 450, 451, 10060 and more...

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Topic:

Topic author: ouailleme
Subject: error 421, 450, 451, 10060 and more...
Posted on: Jun 14 2008 02:06:27
Message:

Hi
There are many people who don't receive my mail.
I'm sure of the email adresses validity (friends... etc)
The log report gives me errors like 421, 450, 451, 10060...

examples:
Too many concurrent SMTP connections from one IP address (421)
Connection attempt timed out (10060)
Send Error: Error #451

What can I do ?
Is there a support page for the error codes and the solutions?

MLK Pro 6.28
Sending through MLK SMTP server

Replies:

Reply author: xequte
Replied on: Jun 15 2008 01:39:01
Message:

Hi

The error codes listed on our support page:

www.xequte.com/support/

You don't mention your sending method, but it sounds like the internal server.

To describe some of the errors:

421/Too many concurrent connections: Some mail servers such as Hotmail get snakey if you try and send them to many messages at once (from a local mail server)

10060/Time Out: If it happens to every message then MLK's internal mail server is being blocked by your firewall, router, etc (see our FAQ for avoiding this one).

If it only happens to some messages and you are sending large messages (i.e. containing embedded images or attachments) then check your timeout setting is not to short to send each message (under View>Options, Sending)

451/Local Error: That's an unusual one, i'd need to see your log file


Nigel
Xequte Software
www.xequte.com
nigel@xequte.com

Reply author: ouailleme
Replied on: Jun 19 2008 10:26:59
Message:

Hi Nigel
I use sending through MLK internal SMTP server
Here are the logs :

Error 421 :
Major Sending Error for toto@yahoo.com: Send Error: Too many concurrent SMTP connections from one IP address (421)
toto@yahoo.com: FAILURE (Send Error: Too many concurrent SMTP connections from one IP address (421))
Failed send for toto@yahoo.com

Error 451
Attachment Count: 0
Sender: l'Ours Acrobate <oursacro@oursacrobate.com>
Personalized: False
Commencing Send (5)
To Recipient Count: 0
CC Recipient Count: 0
BCC Recipient Count: 0
Recipients per Message: 1
Starting send with SMTP Server
DNS Server:
HELO Name:
Thread Count: 15
Time Out: 80
DNS Server: 212.27.54.252
Commencing Send via Internal Server
Adding recipient: toto@yahoo.fr
Connecting...
Connected to server for delivery of toto@yahoo.fr
Connected to server for delivery of toto@yahoo.fr
Connected to server for delivery of toto@yahoo.fr
Delivery Error for toto@yahoo.fr: Send Error: Error #451 (451)
toto@yahoo.fr: FAILURE (Send Error: Error #451 (451))
Failed send for toto@yahoo.fr
Completed sending
Success Count: 0
Failure Count: 1

Error 10060
Attachment Count: 0
Sender: l'Ours Acrobate <oursacro@oursacrobate.com>
Personalized: False
Commencing Send (5)
To Recipient Count: 0
CC Recipient Count: 0
BCC Recipient Count: 0
Recipients per Message: 1
Starting send with SMTP Server
DNS Server:
HELO Name:
Thread Count: 15
Time Out: 80
DNS Server: 212.27.54.252
Commencing Send via Internal Server
Adding recipient: sophie@vigeo.com
Connecting...
Connected to server for delivery of sophie@vigeo.com
Connected to server for delivery of sophie@vigeo.com
Delivery Error for sophie.debost@vigeo.com: Send Error: Connection attempt timed out (10060)
sophie@vigeo.com: FAILURE (Send Error: Connection attempt timed out (10060))
Failed send for sophie@vigeo.com
Completed sending
Success Count: 0
Failure Count: 1

In those examples I changed my recipients' mails, but I'm sure the original mails are valid.

I have have many examples of those errors in my logs, although I don't have any problem for the majority of my recipients.
But I'd prefer all the valid adresses to be reached !
François

Reply author: ouailleme
Replied on: Jul 03 2008 02:24:48
Message:

up...

Reply author: xequte
Replied on: Jul 06 2008 01:04:15
Message:

Hi

The 451 is some kind of blocking/disconnect from the destination server, either your ISP or the destination server are stopping your sending because it broke some spam rule.

The timeout here could be two things, but as you can normally send via the internal server I would assume that you are sending a large message (with embedded images and/or attachments), because your timeout is quite short (80 seconds). Use a larger value such as 300 seconds.



Nigel
Xequte Software
www.xequte.com
nigel@xequte.com

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