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December 15, 2010 ChangeSender press release

December 13, 2010 ChangeSender Demo Video ready

December 04, 2010 ChangeSender v2.50 released

October 09, 2010 New servolutions website design

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Product: POPcon


POP3 server configuration

Exchange Server / SMTP configuration


Internet connection

General configuration options


POPcon / POPcon PRO help file

Version history of POPcon


POPcon Installer


Product: POPcon PRO


POP3 server configuration

Exchange Server / SMTP configuration


Internet connection

Antivirus function

Antispam function

Blacklist servers

Rule-based distribution system


POPcon / POPcon PRO help file

Version history of POPcon


POPcon PRO installer

Product: ChangeSender

Version history of ChangeSender


Download the Outlook add-in Install this on each user's system.

Download the server component, Exchange 2000, 2003 version Install this on the Exchange Server (this version for Exchange 2000 or 2003)

Download the server component, Exchange 2007, 2010 version Install this on the Exchange Server (this version for Exchange 2007 or 2010)

POPcon purchase page

PAD-File (XML) of POPcon

PAD-File (XML) of POPcon PRO

PAD-File (XML) of RemoveWhitespaceFromAddRemovePrograms

PAD-File (XML) of POPcon NOTES

Support files

Comment transférer les paramètres de configuration POPcon vers mon nouveau serveur, sans tout reconfigurer?

Mon serveur Exchange 2007 n’accepte pas les messages depuis POPcon et répond "530 5.7.1 Client was not authenticated"!

Mon serveur Exchange 2007 ou 2010 n’accepte pas les messages emails de plus de 10MB. Que puis-je faire ?

Mon serveur Exchange 2007 rejette les messages depuis POPcon et répond "550 5.7.1 Unable to relay". Que puis-je faire?

Que veux dire le message d’erreur "452 4.3.1 Insufficient system resources" ?

POPcon à déplacé des messages email dans le dossier TOOLARGE ou BADMAIL. Comment puis-je les renvoyer à Exchange?

There are .msg files in the POPcon folder with undistributed emails left after we solved an Exchange problem. How can we redistribute them?

Emails to recipients that are unknown in my Exchange/ActiveDirectory organization are rejected by my Exchange Server and seem to remain in POPcon's queue.

Does POPcon work with Exchange 2010? 2007? 2003? 2000?  5.5? SBS versions?

The distribution of incomming emails from a mailing list does not work correctly. What can I do?

What do I do if all emails get forwarded to the postmaster because they "do not have local recipients"?

POPcon hangs when my virus scanner deletes infected *.msg files from the POPcon folder!

Can I start the mail retrieval cycle from the command line (.bat, etc.) ?

Why is email to unknown recipients in my domain not forwarded to the postmaster?

POPcon downloads email ok, but can't reach my exchange server - what can I do?

BCC recipients do not receive the email, although recipients listed under TO: and CC: do. Any hints?

How can I get POPcon to not work with my ISA-Server (proxy) ?

What can I do about the error message "Host did not acknowledge DATA command [554. 5.5.2 No valid recipients]"?

POPconAdmin does not work or has problems communicating with my POPcon service?

Will I lose emails if my Exchange Server happens to be down when POPcon tries to send emails there?

Is there a trace of POPcon's actions somewhere so we can check where email messages came from and where they went?

How can I get rid of downloaded emails that are stuck in POPcon's queue?

All emails are suddenly tagged as SPAM after a period of no problems with the antispam feature!

POPcon does not install on my machine. What can I do?

Exchange/SMTP connection was unexpectedly closed or error message "454.5.7.3 Client does not have permission to submit mail to this server."

How can I resend already downloaded messages?

How do I configure Exchange and POPcon if I want to handle only part of a domain?

How can I diagnose malfunctioning antispam blacklist server lookups?

What could be the reason for ''Mail transfer to exchange failed, reason: Connection to host denied'' ?

Exchange does not accept some email from POPcon and keeps saying "550 5.7.1 Requested action not taken: message refused"!

POPcon always forwards my email to TWO Exchange mailboxes: The real recipient and a recipient named like my catch-all mailbox at the ISP. How do I stop that?

POPcon says that it drops copies of downloaded email - what causes this message?

What can I do when exchange does not accept some emails and comes up with an error message: "550.5.5.1 user unknown" or "503.5.5.2 need Rcpt command" ?

The new version 3.20 of POPcon can download IMAP email. Can it download email from AOL accounts with this?

Can I use POPcon to download email from Gmail accounts?

"Out of Office" messages are returned to internal users but not external users on the internet. Is this a problem of POPcon?

Why does POPcon need to know the "accepted domains" on the POP3/IMAP config tab?

How do I configure CSCatchAll? The Administrator utility only allows me to enter a license code.

How can I enable non-delivery reports (NDRs) to external mail senders?

Mail does not reach mail-enabled public folders. What could be the reason?

Only messages less than 10MB in size seem to come through, does POPcon impose a size limit?

Windows Data Execution Prevention is stopping or crashing the POPcon antivirus engine. What can I do?

I want POPcon to forward some accounts to a non-local mailbox on the internet but that does not work. How can I do this?

Exchange does not accept any email from POPcon. Error message: "530 5.7.0 Must  issue a STARTTLS command first"

I installed CSCatchAll and configured a catch-all account but it does not seem to work at all! What can I check?

Why is the spam checking taking so long? It takes 30 seconds for a single message!

What does the error message "[blacklist] could not be tested and will not be used" mean?

Mails to mail-enabled public folders end up as posts instead of as emails. Can that be changed?

How does the POPcon PRO antispam feature work / why is it not 100% accurate?

What is the shortest mail download interval supported by POPcon

What does a "421 4.4.1 Connection timed out" Exchange 2007 SMTP error message mean?

My Exchange 2007 only accepts one or a few messages at a time from POPcon. How can I increase the number?

Error message "Exchange aborted receiving the message after 2xxxx bytes." - what to do?

ChangeSender installed correctly but the sender address appears unchanged

How can I restrict my users choices for the Send-As address?

Why doesn’t my new distribution group accept emails from outside?

How can I use the same sender address for two Exchange mailboxes?

504 5.7.4 Type d’authentification non-reconnu – erreur lors de l’utilisation d’un relais SMTP avec Office 365

Installation and configuration of Exchange 2003 Server

Installation and configuration of Exchange 2007 Server

FAQ as RSS feed

Knowledge Base


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