your provider"s email server sends a message back to the Production server

Minuteman Library Network
http://www.mln.lib.ma.us/info/mlnform.htm
http://www.mln.lib.ma.us/
email
webmaster@minlib.net
webmaster at minlib.net

Cambridge Public Library
May 15, 2007

I have checked with Minuteman regarding your email problem and
have determined the following:

The problem is when the Production server sends an email notice
to your provider, your provider's email server sends a message back to
the Production server to verify that it is a legitimate email server.

Because this is Minuteman's Production server and is not really
an email server, they block those types of queries at the firewall.

Minuteman had opened up the firewall briefly about a year ago
(by accident) and the server was overwhelmed with SPAM.
This caused enormous system performance problems.

There have been NO other complaints about the Minuteman firewall
set up from the over 300,000 patrons that get email notices.

Minuteman asked your provider to white list Minuteman, but they have
not heard back from them that they would be willing to do this.

All that can be done on our end, has been done.
Perhaps you could contact your provider and request that they white
list email from Minuteman.

Please do not contact Minuteman about this situation, they have
done all they can and now your provider holds the answer.
Please contact me for any and all questions you may have.
Yours truly,
Madeline Amorosi, Assistant Director for Public Services
Cambridge Public Library
Massachusetts
http://cambridgema.gov/cpl
email
mamorosi at cambridgema.gov
617 349-4040



Temporary Main Library at Longfellow School building
359 Broadway
Cambridge MA 02139
617 349-4040

Boudreau Branch
245 Concord Ave
Cambridge MA 02138
617 349-4017

Central Square Branch
45 Pearl St
Cambridge MA 02139
617 349-4010

Collins Branch
64 Aberdeen Ave
Cambridge MA 02138
617 349-4021

O'Connell Branch
48 Sixth St
Cambridge MA 02141
617 349-4019

O'Neill Branch
70 Rindge Ave
Cambridge MA 02140
617 349-4023

Valente Branch
826 Cambridge St
Cambridge MA 02141
617 349-4015
http://cambridgema.gov/cpl

Re: your provider"s email server sends a message back to the Production server

Here's one of the problematical notices from our pubilc library...


_ _ _ _ _ Example. Notice. Minuteman Library Network. _ _ _ _ _
Mail-from: From camtel@library.minlib.net Sat May 19 00:20:37 2007
camtel at library.minlib.net
Return-Path:


Received: from library.minlib.net (library.minlib.net [64.69.127.2])

Received: (from camtel@localhost)
(from camtel at localhost)
by library.minlib.net (8.9.3p3-20030923/8.9.1) id AAA03306

Message-Id: <200705190423.AAA03306@library.minlib.net>
<200705190423.AAA03306 at library.minlib.net>

Subject: Library Notice
Reply-To: camreturns@minlib.net
camreturns at minlib.net


CAMBRIDGE PUBLIC LIBRARY NOW OPEN AT THE LONGFELLOW SCHOOL
359 BROADWAY
CAMBRIDGE MA 02139-4125 Sat May 19 2007
617-349-4040 http://www.cambridgema.gov/CPL/hours/libhours.html

Requested Item(s) Ready for Pickup
The item that you requested is now being held for you at the library.
Bring this library card to pick up the item by the Pickup Date below.
Some libraries may charge for unclaimed requested items.

AUTHOR:
TITLE: The legend of 1900
CALL NO: DVD LEGEND OF 190
BARCODE: 34868004907812
LOCATION: WATERTOWN/Audiovisual
PICKUP AT: Cambridge M BY: 05-29-07

3:1

Re: your provider"s email server sends a message back to the Production server

> Their test email said:
>
> > Mail-from: From camtel@library.minlib.net Tue May 1 12:33:32 2007
>
> ... which I'm assuming is going to be their envelope sender.
>
> Let's get their authoritative nameservers:
>
> host -t ns library.minlib.net
> library.minlib.net name server ns3.ctccom.net.
> library.minlib.net name server ns4.ctccom.net.
>
> Alright -- now let's ask each of them who the MX is for the domain
> library.minlib.net:
>
> host -t mx library.minlib.net ns4.ctccom.net
> Using domain server:
> Name: ns4.ctccom.net
> Address: 64.69.100.35#53
> Aliases:
>
> library.minlib.net mail is handled by 10 mail.library.minlib.net.
> host -t mx library.minlib.net ns3.ctccom.net
> Using domain server:
> Name: ns3.ctccom.net
> Address: 64.69.100.67#53
> Aliases:
>
> library.minlib.net mail is handled by 10 mail.library.minlib.net.
>
> Great. Now what's mail.library.minlib.net?
>
> host mail.library.minlib.net ns3.ctccom.net
> Using domain server:
> Name: ns3.ctccom.net
> Address: 64.69.100.67#53
> Aliases:
>
> mail.library.minlib.net has address 64.69.127.2
>
> Let's contact it...
>
> telnet 64.69.127.2 25
> Trying 64.69.127.2...
> telnet: Unable to connect to remote host: Connection refused
>
> That's why sender verification fails.



_ _ _ _ _ webmaster@minlib.net webmaster at minlib.net _ _ _ _ _
> We've double checked and it appears that your email address is correctly
> entered in our system with no errors, spaces or other characters. We've
> checked our mail logs and they indicate that mail is being successfully sent
> to your email address. However, the logs also indicate that your mail
> server appears to be trying to validate our server by looking for a server
> named "mail.minlib.net". This is not the name of our server, email is sent
> from the catalog from a server named "minlib.net". So, your mail server
> will not be able to verify us if it keeps using that name.
>
> We recommend that you contact the administrator of your mail server to look
> into why your server would be blocking emails from minlib.net. If it
> possible for you to put minlib.net on your "whitelist" this may possibly
> solve this issue.
>
> Alternately, you may want to use another email address as your main email
> contact for emails coming from MLN. You can change your email address by
> going to: https://library.minlib.net/patroninfo/ and entering your barcode
> and PIN. Once logged in, choose "Modify Personal Information" and update
> your Email address.
>
> Additionally, just to make you aware of how the system handles email
> notices. When your items comes to your library to be picked up the system
> queues an email notice to send to you (but it doesn't yet send it). The
> email notice will be sent overnight. However, if you pick up your item
> during that day, the system will remove your email notice from the queue.
> So, sometimes it may seem as if you should have been notified about items,
> but since you picked them up the system no longer notifies you about that
> item.
> Webmaster
> Minuteman Library Network

Re: your provider"s email server sends a message back to the Production server

Our management team at Minuteman Library Network failed to remedy
difficulty with the network, would any of you other kind folks out
there have any hints, tips or pointers?...

Re: your provider"s email server sends a message back to the Production server

Don Saklad wrote:

>Our management team at Minuteman Library Network failed to remedy
>difficulty with the network, would any of you other kind folks out
>there have any hints, tips or pointers?...

Are you advertising for a consultant?

Re: your provider"s email server sends a message back to the Production server

Our public libraries do need more creative talented technical types
skilled in customer service rather than so many hidebound library
bureaucrats.

Re: your provider"s email server sends a message back to the Production server

On Sat, 19 May 2007 06:59:39 GMT, Don Saklad
wrote:

>Our management team at Minuteman Library Network failed to remedy
>difficulty with the network, would any of you other kind folks out
>there have any hints, tips or pointers?...

Tell your ISP to stop doing Sender Address Validation, it's very
rude, and will get them on some DNSBLs, and into private block lists.

--
Steve Baker

Re: your provider"s email server sends a message back to the Production server

_ _ http://www.innopacusers.org/list/archives/2007/msg02854.html _ _
We have a similar setup where our III server cannot be directly
contacted for smtp connections from the internet. Would you be able to
(on your firewall) forward any smtp connections made to your III server
to your primary email server, and then setup your primary email server
to accept mail that is destined to your III server? Also setup the MX
for library.minlib.net to be your primary email server that can be
accessed from the internet(this is probably the key step, you might not
need to do the forwarding). How are your receiving delayed bounces
right now if mail cannot be sent to the MX? That is what we have setup
and it seems to work well, we haven't seen any verification errors like
you are describing.

Another way to go would be to setup your III server to use your primary
email server has a smarthost ,
so that all mail sent from your III server is sent first to your primary
mail server, and then the primary mail server handles the actual
deliveries. I don't know if III will set that up for turn key sites, if
you are a software only site then you should be able to find sendmail
config examples that show you how to do that.

Re: your provider"s email server sends a message back to the Production server

http://z7.invisionfree.com/Northeast_Weather/index.php?act=i dx