How to stop mail address harvesting MS5.2 patch 2.05

Problem: 2.2 million mailboxes, spammers are harvesting our mailadresses by sending multiple RCPT TO SMTP statements and checking the repsonse (valid recipient or not). Result is that more mail addresses are being harvested by spammer and thereforemore mailboxes are filling up (quota exceeded). This is requiring extensions to the mailstores as "spam-filled" mailboxes exhibit a higher mailbox utilisation than "normal"use mailboxes.
Is there any way to stop spammers from using the RCPT TO statement repeatedly to harvest mail addresses please ?

Basically, no. You have to allow rcpt to: statements. If you lie about who is there, then you run the risk of not notifying a real sender that his mail was mis-addressed, and your users will loose mail. Not good.
You can lock your server down, and then nobody will be able to receive mail. Not good.
Better: install some spam filtering product. That's what most of us do.

Similar Messages

How to stop Mail from selecting addresses from the list of Previous Recipients?

How to stop Mail from selecting addresses from the list of Previous Recipients?

This is a related question.
I deleted ALL my previous recipients and when I create a new e-mail it STILL is getting addresses that I don't want - they pop up and I don't know how to stop this!
I switched from one ISP to another - I deleted the old e-mail account in MAIL - I DID use the same name on the account - is that why it keeps bringing up the old address?
ARGH!

Access - How to create Mail Address only list?

Printing envelopes from mail lists - via Microsoft Excel? Access - How to create Mail Address Only list?
Bearing my "new boy" status, step by step instruction would be appreciated.

Hi
This is a question only about the Microsoft products and has nothing to do with Toshiba notebooks but I have investigated a little bit in the net and found this useful sites:
http://support.microsoft.com/kb/q141991/
https://www.nahu.org/member/using%20excel%20to%20create%20lists%20and%20labels .pdf

How to stop mail from recovering a too large message

how to stop mail from recovering a too large message

You can't stop Mail from storing sent messages locally. If they're synchronized with the IMAP server, they'll still be present locally. The only way to get the effect you seem to want is to use webmail.

How to stop mail from recovering the same message over and over again to the extent that it has wiped out all start up disk memory?

How to stop mail from recovering the same message over and over again to the extent that it has wiped out all start up disk memory?

You need to find and delete (move to the Trash) the offline mail cache (.offline cache.) It's a hidden folder (files and folders with a preceding dot are hidden) inside the Mail folder (inside IMAP) in your user library. Since it's hidden, in order to see it run the following command in Terminal in Applications>Utilities. Hit return/enter once you have pasted in the command.
defaults write com.apple.finder AppleShowAllFiles -bool true ; killall Finder
To reverse this and hide all those hidden files and folders again
defaults write com.apple.finder AppleShowAllFiles -bool false ; killall Finder
Leave hidden files/folders enabled until you finish emptying the Trash so you know it's gone.

How to stop email addresses from being added to contacts

hofw do you stop email addresses from sent emails from being added automatically to contacts?

No. They are not being created by the phone. They are being created by your mail system, whether that is Exchange, Yahoo, Google, etc. They all have settings to automatically create contacts from people you correspond with. There is no setting on the phone to control this. Check the settings for your mail account with or talk to your IT department.

How delete e-mail addresses I-Pad 2?

How can I delete e-mail addresses I-Pad 2..I am on AOL Thanks Lannie67

For the addresses that pop up when you start a new email. Tap the first letter. A window opens up, tap the blue i in a circle following the address. A new window opens up, scroll down to remove from recents.
When you say old obsolete addresses do you mean from contacts .

How to STOP Mail from launching at startup

I hate even posting this question because it seems like I'm missing something easy. I want to stop mail from launching at start-up because I now have entourage.
I can find how to TURN OFF mail and TURN ON entourage at start up.
Mail: 2.1.3
Entourage: 12.2.3

You're overlooking the obvious, as you suspected.
Go to System Preferences > Accounts > Login Items and remove Mail from that list. If you want Entourage to startup, add that to the list.
However, there's no good reason to use Entourage over Mail, especially because it stores all your mail in a single file, so if that file ever becomes corrupted (it will, at the worst possible time) all your mail is gone; it cannot be recovered.
Secondly, you shouldn't startup applications at launch, since that will slow down your startup time and can easily cause other problems before you even get the chance to do anything with the computer. If you need to use a program, launch it after the Finder has loaded completely.

How to stop Mail from downloading automatically even it is set not too

My mail programme preferences are set to download manually.
In advanced, the account is not 'included in automatically checking for new mail'
I use scripts to send mails after certain tasks are ready. Sometimes (randomly) mail all of a sudden downloads all mail.
Anybody know what could cause this?
How to stop it as I do not want it to download mail at all as I use an other programme for reading and writing mail.

Hi Mulder
What you're describing doesn't make sense. Mail doesn't download mail if it's set to wait for a manual initiation.
I know however...
But once that is check is initiated, any and all waiting mail will be downloaded.
I know.
I've never heard of this happening before, to anyone. Unless your preferences are corrupted, which there's no indication of at this point, something else is triggering Mail to check for new email.
I never heard either, hence posting
But if you're using some other program for sending and receiving email, why would you have that account setup in Mail, as that would defeat the purpose of supposedly using that other program. If you really want to eliminate the possibility of this happening, you would need to delete that account in Mail, and backup the mail for that account before you delete it.
complex issue, but rather keep both programmes.
Otherwise, we need more details, including which version of Mac OS X you're running, and the other program that you're using for email.
OS 10.5.5
Mail 3.5
other programme Entourage

How to stop Mail form downloading automatically

My mail programme preferences are set to download manually. I use scripts to send mails after certain tasks are ready. Sometimes (randomly) mail all of a sudden downloads all mail.
Anybody know what could cause this? How to stop it as I do not want it to download at all.

Thanks haroldo1
haroldo1 wrote:
Verify that Mail/Preferences/General Check for New Mail is set to Manually.
It so is!
Just a guess, you could also eliminate the incoming mail server information and eliminate it's ability to download (...I do not want it to download at all...).
If I do that (and no it never needs to download only upload) Mail flips out as it wants the information. I tried this.

How would e-mail address change affect forum?

How company recently changed e-mail addresses for all the employees. Both the format of the username and the domain changed as well. Our old address will still work for 2 years before they wipe it out, but of course they want us to start using the new address now.
Many websites, including NI discussion forums, use a person's e-mail address as the login name. When the e-mail address becomes inactive, how does that affect my interaction on the discussion forums? Obviously, I could still login using the old e-mail address. But any e-mails from the forum for things such as subscriptions to threads would no longer work. I could not find any place in my profile settings to update my e-mail address for subscription purposes. Of course, I expect it to be difficult to change the forum login name since that would be my unique identifier in the forum.
This shouldn't really cause me any problems for almost 2 years. And I'm sure I'll have to deal with it on other websites that use your e-mail address as the login name such as sites that I purchase products from.
Anyone else had similar problems with e-mail address changes? It makes me wonder, if the new e-mail address is supposed to be better, why didn't they use the new format way all along.

The profile is site wide and not specific to the forums. To change the email address associated with the user, click the MyNI link at the top of each page and then the Modify Profile link.
Try to take over the world!

How to confg mailing address in recuitment....

Hi,
How to configure nailing address in recruitment for sending a mail to internal employees.......
Wether we need to configure and also required Dynamic actions....
pls let me know the exact process to overcome this issue..
Regrads:
Kumar.G

Check the IT10105 Communication. Here u have to maintain for each applicant in PB40 or PB30.

How to stop mail empty subject field warning

So does anyone know how to stop the dam warning on the I pad? Just went through a restore and this warning is back. I was able to stop it, just can't remember how. <age factor I guess>
Thanks,

Hi there
I have deleted the account from all my devices and set it up again, but the problem continues. Any other ideas?

How to stop Mail grabbing wrong address?

Since doing one of the Snow Leopard updates (currently 10.6.7) Mac Mail on both our Macs occasionally pulls out a similar first or last name from our Address Books and switches the address already in the TO: field to that wrong address! Even when I double-check before hitting Send it frequently makes the change anyway and I only know when I look at the sent msg in my Sent Folder and it has the wrong email address. There must be a way to stop this.

What do you mean by already in the TO? If it is already there, it should not get changed. However, if you are typing it in, then stop on the first, correct one, and click on it. It will stay in the To.
It there are two valid addresses, with similar names, then you must be alert. However you also may want examine the Previous Recipients addresses (Windown/Previous Recipients) and remove any no longer valid or useful.
Ernie

How to stop mails from unknown user

Hi All
This is my messaging server version.
./imsimta version
iPlanet Messaging Server 5.2 HotFix 1.21 (built Sep 8 2003)
libimta.so 5.2 HotFix 1.21 (built 18:35:22, Sep 8 2003)
SunOS mum1pp1-a-fixed 5.8 Generic_117350-26 sun4u sparc SUNW,Sun-Fire-880
One of our USER is frequently getting some mails which is not
addressed to him
To say clearly
Our user mail id is ([email protected]) but in the below output
The mail is sent to [email protected] and
The mail is sent from [email protected]
but i don't know how our user is getting that copy of mail and the user
camaad1 (invalid user) is not avaliable in our domain.
My ques.....
1. How to rectify this problem ??
2. Spamassassin is configured on our servers and i think we have to
tune spamassassin to solve this problem ?? can any body tell me
how to tune ???
Check the below output
Date:
Mon, 27 Nov 2006 14:28:17 +0220
From:
Katharine Charles <[email protected]>
Subject:
Katharine wrote
To:
[email protected]
Message-ID:
<01c71230$47857fd0$6c822ecf@deborapms>
MIME-version:
1.0
X-MIMEOLE:
Produced By Microsoft MimeOLE V5.50.4133.2400
X-Mailer:
Microsoft Office Outlook, Build 11.0.5510
Content-type:
text/plain; charset=iso-8859-2
Content-transfer-encoding:
7bit
X-Priority:
3 (Normal)
X-MSMail-priority:
Normal
Thread-index:
Aca6Q0-'>UFR08/)'7T./Q5?V4@14+==
Original-recipient:
rfc822;[email protected]
X-Mozilla-Status:
8001
X-Mozilla-Status2:
00000000
X-UIDL:
10096-1043648961
Thanks in Advance

Hi,
1. The version of Messaging you're using, is very,
very old. If you do not have a support contract, you
should at least download and apply 5.2p2.
What difference does it makes ?? can you explain
me..So Jay doesn't have to re-explain this for the thousandth time.
5.2p2 contains hundreds of fixes and can pro-actively fix problems that you may have not hit yet. We always recommend that customers all use up-to-date software if possible. In the same way that you should be patching your Operating System and other applications.
my ques ...
What will happen if i'm using "dnsverify" keyword in
TCP local channel ??
can you explain me ??Do you mean the dns_verify keyword in the mapping table or the mailfromdnsverify channel keyword?
Either way I recommend you look at the iMS5.2 Admin Guide which explains both of these keywords and how to use them.
Regards,
Shane.

How to stop mail address harvesting MS5.2 patch 2.05

Similar Messages

Maybe you are looking for