Windows SMTP Drop Spam

Feb 9, 2007

I keep having tons of spams in the Drop folder of my Windows SMTP which I enable only for sending out forms. How do you normally stop this? I cant stop the SMTP as it is for forms usage. Relays are already set to my local IPs

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Smtp Server In IIS, Mails Going To DROP Folder

May 12, 2008

I have created virtual SMTP server in IIS6 and while send e-mail from the same server using SMTP IP address, the e-mail do not reach recipient, all sent e-mails goes directlly to DROP folder and stay it that folder.

I have checked event viewer, no error, also used telnet to create and send e-mail, no error.

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Plesk 12.x / Windows :: Drop Unused Listed Databases

Feb 24, 2015

Plesk12 has been installed on Windows2012R2. In the Tools and Settings/Database Servers list we have

· Local MySQL server (default for MySQL)
· sql-db-1 (default for MS SQL)

We only expect to use the remote sql-db-1 database for user databases.

Can we delete the other 2 databases and is this recommended? Does the Local MySQL server contain the Plesk Management database/schema?

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Stop Spam At Smtp Level

Nov 5, 2007

Stop spam at smtp level.It's great with a lot of features, easy to install.

Stop spam now

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How To Tighten SMTP To Avoid SPAM Relaying?

Aug 26, 2007

I have two domains that I recently "re-animated" and they are been used as spam relays. I get almost 2 connections per second, according to the exim log.

I use ConfigServer Security & Firewall which can block IP's that exceed a number of SMTP connections per hour. But these are thousands of IPs and proxies. Is there anything else I can do?

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Plesk 11.x / Windows :: Move Spam To Spam Folder Not Available?

Oct 17, 2013

Microsoft Windows Server 2008 R2 Service Pack 1
Panel version 11.0.9 Update #59, last updated at Oct 3, 2013 02:06 AM
MailEnable version 5

I see in the plesk documentation that the screen to enable SPAM filtering for an individual there is an option to "Move spam to the Spam folder". I don't see that option so I am wondering if it is only available on some versions of Plesk, or in combination with certain mail servers. How to make that option available?

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Windows 2000 SMTP

Apr 23, 2007

These few days I keep having error logs for form delivery

Message delivery to the remote domain '' failed for the following reason: Unable to deliver the message because the destination address was misconfigured as a mail loop.

Perviously everything was fine , wonder anyone know what could have suddenly cause this issue.

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VPS About To Drop

Oct 13, 2009

A friend pointed out today that urgentVPS' WHMCS license had expired so he was unable to get to support tickets, he also said about the phone number not working properly. Wondered if anyone could shed some light on this situation, or whether I should get ready to back up and pack up?

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Windows Server POP3/SMTP

Jan 20, 2007

I'm running Windows Server 2003.

I have two domains on separate IPs: [] []

I am running two separate SMTP virtual servers (with different access rules) -- with two separate drop folders.

default SMTP Virtual Server [assigned to 160]
second SMTP VS [assigned to 161]

I want added to the default SMTP server and added to the second SMTP server. I have read that I must add these domains via the POP3 service. The problem is that adding domains via POP3 service will always add the domains to the DEFAULT SMTP server. I want added to the second SMTP server.

Is there a solution to this problem, or am I doing something wrong? Can xmail handle this scenario?

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Any Aternative To Windows IIS SMTP Server

Dec 16, 2008

I am not using none of roles and features in windows 2008 but if i wish to use Its SMTP server I have to install IIS. is there any SMTP server or ondemad solution for sending email from J2EE application running on win 2008

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Plesk 12.x / Windows :: SMTP Authorization After Migration

Oct 10, 2014

I just finished to migrate my Plesk 10.5 to 12 and everything is great now.

I just have a little problem with SMTP authorization.

This option, if i'm not doing something wrong, is located on Mail Settings and especially in the section "Relay options". I ticked "authorization is required" and "SMTP".

But when I try to check it on my email client, I can send emails with or without the the SMTP authorization option on the email client.

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Hotmail Drop My Emails

Feb 29, 2008

I have a VPS with rDNS and SPF records configured fine. I am able to send email to all. But for hotmail I can not.

The strange is that on VPS log I have message that the trasation was competed:

2008-02-29 23:22:07 1JVHMV-00069K-PE <= H=localho$
2008-02-29 23:22:08 1JVHMV-00069K-PE => R=lookuphost $
2008-02-29 23:22:08 1JVHMV-00069K-PE Completed

But the message was not delivered in any folder (inbox or spam folder).

I can not understand it. What can to be happening?

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Plesk 12.x / Windows :: Spammers Blocking Inbound SMTP

Sep 19, 2014

I am having some problems with the inbound smtp sockets, we are receiving a constant attack from spammers, and they are taking all the sockets we have open for our users. We have enable SPF, greylisting, inbound control access through authentication, relay access with authentication also. but after some weeks we are on the same situation yet. We have spam assasin also installed as power pack from plesk, and we have add DSN black list from, and but we still suffer from this problem.

We have also try to increase the socket assigned to 200 and after some minutes they used all again and the CPU change increase up to 25% of the total capacity.

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Plesk 11.x / Windows :: SMTP Settings For Live Mail

Aug 10, 2013

I tried to configure windows live mail for an email account. Domain is hosted on a windows Plesk server. Incoming mail is working but unable to send outgoing mails.

Subject 'xxxxxxxxxxxxxxx'
Server Error: 503
Server Response: 503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.
Server: 'xxxxxxxxx.tld'
Windows Live Mail Error ID: 0x800CCC79
Protocol: SMTP
Port: 25
Secure(SSL): No

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Plesk 11.x / Windows :: SMTP Mail Send Limit?

Jul 31, 2012

I am using SMTP for mail service. Is there any limit for maximum that mail can be sent for a month or day? If limit is der then how much i can send?

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How-to: Drop INVALID SYN Packets With Iptables

Jan 13, 2005

Feel free to use the following iptable commands below to drop INVALID SYN packets that sometimes are also used to flood the server..

/sbin/iptables -A INPUT -i eth0 -p tcp --tcp-flags ALL ACK,RST,SYN,FIN -j DROP
/sbin/iptables -A INPUT -i eth0 -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP
/sbin/iptables -A INPUT -i eth0 -p tcp --tcp-flags SYN,RST SYN,RST -j DROP

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Different Methods To Drop DDOS Attack?

Jul 7, 2009

What are the different methods to drop DDOS attack?

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Restarting Mysql/named If They Drop

Dec 22, 2007

way to restart mysql and named if they drop. I'm on cpanel.

I've searched and found the following:

For mysql:

NUMBER=`ps --no-heading --user mysql | wc -l`;
[ $NUMBER -eq 0 ] && service mysql restart;
For named:

NUMBER=`ps --no-heading --user named | wc -l`;
[ $NUMBER -eq 0 ] && service named restart;
I have these set to run every 5 minutes, just to check if mysql/named are running. I found out that it doesn't work: I woke up to a whole bunch of sql errors and realized that mysql dropped while I was asleep... I type in "service mysql restart" manually and it restarts as usual, so I know that the command to restart sql works fine, but the restarts aren't triggering in the first place.

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Plesk 11.x / Windows :: Configure Report Emails To Use SMTP Authentication?

May 12, 2014

Plesk Panel, 11.0.9, #61, Windows 2008 R2 SP1, x64

With reports configured to send out to an email address local on the Windows server configured through PLESK, if local relay isn't enabled at on the SmarterMail server, the reports are never delivered.

- server is [domainx].com
- email to receive reports from PLESK is plesk444@[domainx].com
-this email address is able to send and receive internally or externally to and from any client w/ SMTP auth enabled.

If SmarterMail is configured with SMTP Authentication Bypass for, we get the scheduled report emails as we should. Without the SMTP Authentication Bypass enabled, none of the clients or administrators get any reports or notifications at all.

QUESTION: How can I configure PLESK Panel 11 itself to use that SMTP Authentication to send those reports out?
--is there a configuration file or registry value I can add or modify?

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100 Day Review Of LiteSpeed (Apache Drop-in Replacement)

Aug 14, 2007

(This is the first review I've ever written for practically anything so please bear with me. I feel the need to share my experience to try to help others after all the great advice and info I've received around here.)

If you've done everything you think you can do to improve the responsiveness of your websites like add a mysql cache, PHP opcode cache and various other tweaks, I discovered there is still one more easy thing you can do for a big improvement: replace Apache with LiteSpeed. It's way too easy not to try it and you can leave Apache completely intact to go back to at a moment's notice if you so desire.

I call LiteSpeed a "drop-in" replacement because it uses all my httpd.conf and .htaccess settings without modification. This was critical for me as my sites have some very complex rewrite rules. Other solutions like LightHttpd require extensive work to make changes if you use fancy mod-rewrite rules. LiteSpeed does not need any fiddling. LiteSpeed just adds it's own clean little web interface so you can tweak if you want to, but I didn't really have to change anything. Last but not least, LiteSpeed gets along with Cpanel and DirectAdmin without any conflicts. LiteSpeed's so compatible I can literally do this on my server and the visitors don't even notice the difference (except speed of course!)

service httpd stop
service lsws start
(and visa versa)

I discovered LiteSpeed after reading that the main site had switched to it and had great success (they have a quarter million registered bloggers and of course many millions more daily readers).

The main reason I tried LiteSpeed is because it's roughly twice as efficient in memory use and performance than Apache 1.3 & 2. It runs PHP up to 50% faster than Apache and static files get served several times faster (faster than thttpd & lighthttpd). So this means you can either double the number of active connections you currently max out at now, or make a regular website respond nearly twice as fast, or under heavy loads still respond within a reasonable amount of time when Apache would be completely unresponsive.

The last situation was exactly what I was hoping for and LiteSpeed helped me keep my sanity on a bad VPS node.

Basically a couple months into owning my first VPS (after many years of shared-hosting experience) I started to realise many of the industry promises about VPS are an outright lie. You are far from isolated from your neighbours. Any disk load created by bad neighbours, mysql abuse or otherwise, will directly affect you and you are powerless to stop it. It's the most poorly regulated resource on any VPS node and it can be made worse by slack, ignorant or inexperienced hosts who do things like move accounts during busy periods onto and off a node at the root level which ties up the entire node for an hour or more. Under Apache, I was getting timeouts during peak visitor times and that was very upsetting.

On top of my VPS neighbour troubles, no matter how I fiddled with Apache's settings (with all the helpful guides around here) I could not make it comfortably fit within the guaranteed memory limit of my VPS with Cpanel, which I really wanted to keep as it's much easier for my end-users. Switching to LiteSpeed caused a radical drop in memory use. I've seen nearly 1000 people online within a one minute period on one of my sites and it still fit comfortably within my memory limits and stayed extremely responsive.

I've discovered another plus to LiteSpeed along the way that no-one else seems to mention. It's the only server software that "out of the box" seems to serve web compressed (gzipped) pages properly as chunked output. This means a visitor will start to see the page immediately as soon as the first part is sent vs. on Apache, mod_gzip actually de-chunks all the output, waits for it to finish, then compresses, then sends.

Mod_deflate on Apache 2.0 was supposed to fix this but it usually doesn't work properly and I've never gotten 2.0 to do compressed+chunked output on my sites without alot of fiddling and help from PHP. It also doesn't seem as smooth as LiteSpeed's output which gives you that "silky" watch-the-webpage render effect that's mentally rewarding to visitors.

On the downside, there is one reason you wouldn't use LiteSpeed - if you use highly customised Apache mods. LiteSpeed cannot support custom mod's and their directives. It does have a lot built in however that Apache does not, so you may way to examine if you can accomplish what you are trying to do another way.

I started with LiteSpeed 3.1 and when I found an incompatibility with an obscure Apache feature (ie. ErrorDocument's as plain text output: ErrorDocument 404 "Not Found" was not supported) they fixed it for me in a day or so after I reported it on their forum. The same for PHP support of "Apache_Response_Headers". Note I am not even a commercial customer! They are now up to 3.2 which has a few other fixes.

The free version of LiteSpeed has a limit of 150 simultaneous connections (plus the linux stack of 200 more which will backlog). I've never seen that limit hit. It's so intelligent about closing connections as needed that it's not an issue for me. Perhaps on a dedicated server with many virtual hosts this will be a problem. Up to version 3.1.1 that was the only limitation, however unfortunately in 3.2 they have decided to also limit virtual hosts to "5", so that's something else you'll have to consider if you want the free version, otherwise the commercial version has a free trial and money back guarantee.

Some people were upset with me that I wouldn't name my VPS host when I was constantly complaining of troubles but that's just my style when I have nothing nice to say still have to do business with them, so don't name names. But when I have something nice to say about a company, I like to speak up. So I heartily recommend LiteSpeed and hope other people give it a try - especially if you are on my VPS node ;-)

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Not Able To Send Mail Using SMTP Service On Windows 2003 Server Machine

Jun 17, 2008

Am using Windows 2003 server with IIS6.0 and SMTP.I tried to send mail using C# code through SMTP service.But my mails are getting queued in C:InetpubmailrootQueue.

What could be the problem??I've done many trouble shooting steps but no luck.I changed the Relay settings.Since I am in a LAN connection, i've tested the relay setting using both the 'localhost'and 'MyDomainIP'but everything in vain.

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Wierdest Thing EVER Eth0 Drop W/ Plesk Usage

Jun 1, 2007

I just got my servers up, DNS servers what not and my main plesk server for shared/reseller hosting.

Now for the weirdest thing ever!

I started working on my plesk packages a few days ago, after I got plesk installed.

Systems stats as follows

Supermicro AS1021M-T2 barebone

Has 16GB of infeon DDR2-667 memory.
2 250GB hard drives in mirrored configuration with the Acera 9500 w/ 256MB of memory

Running Cent OS 4.4

For some reason, Everytime I go into Plesk, or any of the websites that are contained in Plesk, The nic card drops out, wont allow any activity to get through, both ways.

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Plesk 12.x / Windows :: Enable External SMTP Server Settings - Unable To Encode IDN Email Address

Jan 7, 2015

We are trying to use a configure settings for an external SMTP server within Plesk (Windows 2008 R2 Plesk 12) but are receiving the following error message:

Error: Unable to encode IDN email address 'username': email address is invalid

We are trying to use a username for SMTP authentication as we do not have the option of using an email address with our current SMTP relay provider.

Is there any way around this so that we can use a username rather than an email address?

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Plesk 12.x / Windows :: SPAM Filter Literally Doing Nothing?

Sep 8, 2014

A few months before I updated to Plesk 12 I noticed a huge jump in uncaught spam - I hoped the update to Plesk 12 might solve this but no luck.

I have now changed the spam sensitivity on my account 1, the idea being I would then whitelist the domains I want to get through but literally nothing is getting marked as spam. Users on other domains on the same server are reporting the same.

I'm using the following blacklist database lists:;;;;

I have Plesk SpamAssassin 3.3.2 installed and set as the Spam handler.

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Plesk 12.x / Windows :: Getting Error While Installing Spam Assassin On 12.0.18

Oct 12, 2014

I am trying to install Spam assassin on Plesk 12.0.18 on windows server 2012 r2 . I am getting error:

Error: Unable to set Plesk SpamAssassin 3.3.2 as the default Spam Filter: defpackagemng failed: Execute spammng.exe --check failed with error code 1: Unable generate the unique file name by template D:Program Files (x86)[*].bak: directory D:Program Files (x86)ParallelsPleskAdditionalPerlsiteetcmailspamassassin does not exist

I have tried re-installing and installing spam assassin from command and as per the solution given in below KB: URL....But I an still not able to install in on the server. I have checked all directory paths are correctly located.

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Spam/Virus Protection On Windows Server 2003 POP Service

Aug 12, 2005

We have a Windows Server 2003 dedicated, and use the Windows POP3 Service for emails, is there anything that can be plugged in to provide serverside spam/virus protection?

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Plesk 11.x / Windows :: Mysql Duplicate Entry Error - Enabling Spam Filter

May 7, 2013

when im trying to enable spam filter for a particular email account i get this mysql error:

Error: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '' for key 3 (mail id i hid it for security reasons

i searchd in the psa database but could not find any duplication...

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