Servolutions Support http://www.servolutions.com/support.htm Support area of the Servolutions website. New POPcon support and FAQ articles. en-us Copyright 2010 Servolutions. c.christensen@servolutions.com webmaster@servolutions.com How to connect to Gmail with modern authentication / OAuth2? http://www.servolutions.com/../support/articles/gmailwithoauth2.htm Connect to Microsoft 365 or Outlook online accounts with mondern authentication (OAuth2) http://www.servolutions.com/../support/articles/Usingoauthformicrosoft365.htm How to manually create the Send Connector in Exchange when the MultiSendcon installer fails to do so http://www.servolutions.com/../support/articles/Sendconnectormanualcreati.htm IONOS blocks non-delivery reports and out-of-office messages http://www.servolutions.com/../support/articles/IONOSblocksNDRsandOOFs.htm How can I transfer my POPcon configuration settings to my new server without retyping it all? http://www.servolutions.com/../support/articles/howtransfer.htm "530 SMTP authentication is required" what does it mean? http://www.servolutions.com/../support/articles/530SMTPauthenticationisre.htm How to protect Wordpress sites with BotFence http://www.servolutions.com/../support/articles/Protectwordpresssiteswith.htm Mail transfer to Exchange failed, reason: Could not reach Exchange SMTP server - check IP port 25 is not blocked http://www.servolutions.com/../support/articles/ipport25blocked.htm 504 5.7.4 Unrecognized authentication type - error when using Office 365 smtp relay http://www.servolutions.com/../support/articles/Unrecognizedauthenticatio.htm Exchange 2013 SMTP error "451 4.7.0 Temporary server error. Please try again later. PRX" http://www.servolutions.com/../support/articles/Temporaryservererror2013.htm I need to have non-delivery reports (NDRs) sent for emails that are too large instead of moving them into the TOOLARGE folder http://www.servolutions.com/../support/articles/NDRfortoolargeemails.htm "421 4.4.2 Message submission rate for this client has exceeded the configured limit" error message from Exchange http://www.servolutions.com/../support/articles/messagesubmissionrate.htm How can I have non-delivery reports (NDRs) sent for unknown users? http://www.servolutions.com/../support/articles/NDRforunknownusers.htm "552 5.3.4. Header size execeeds fixed maximum size" error message from Exchange http://www.servolutions.com/../support/articles/Headersizeexeceedsfixedma.htm How can I disable the Add-in for all users by default? http://www.servolutions.com/../support/articles/ChangeSenderdisabletermin.htm How can I use the same sender address for two Exchange mailboxes? http://www.servolutions.com/../support/articles/samesenderaddressfortwoma.htm How can I restrict my users choices for the Send-As address? http://www.servolutions.com/../support/articles/howtorestrictuserschoices.htm Why doesn’t my new distribution group accept emails from outside? http://www.servolutions.com/../support/articles/distributiongrouprejectse.htm 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" ? http://www.servolutions.com/../support/articles/need_rcpt_user_unknown.htm ChangeSender installed correctly but the sender address appears unchanged http://www.servolutions.com/../support/articles/Changesenderinstalledbutn.htm Error message "Exchange aborted receiving the message after 2xxxx bytes." - what to do? http://www.servolutions.com/../support/articles/Exchangeabortedreceivingt.htm My Exchange 2007 only accepts one or a few messages at a time from POPcon. How can I increase the number? http://www.servolutions.com/../support/articles/onlyacceptsfewmessages.htm What does a "421 4.4.1 Connection timed out" Exchange 2007 SMTP error message mean? http://www.servolutions.com/../support/articles/connectiontimedout.htm POPcon moved emails in the TOOLARGE or BADMAIL folders. How can I resend them to Exchange? http://www.servolutions.com/../support/articles/retrytransfertoexchange.htm What is the shortest mail download interval supported by POPcon http://www.servolutions.com/../support/articles/shortestdownloadinterval.htm "452 4.3.1 Insufficient system resources" error message from Exchange http://www.servolutions.com/../support/articles/insufficientsystemresourc.htm How does the POPcon PRO antispam feature work / why is it not 100% accurate? http://www.servolutions.com/../support/articles/antispamhowdoesitwork.htm "550 5.7.1 Unable to relay" error message from Exchange http://www.servolutions.com/../support/articles/exchange2007unabletorelay.htm Mails to mail-enabled public folders end up as posts instead of as emails. Can that be changed? http://www.servolutions.com/../support/articles/publicfolderpostinsteadof.htm "530 5.7.1 Client was not authenticated" Error message from Exchange http://www.servolutions.com/../support/articles/exchange2007clientnotauth.htm My Exchange 2007 or 2010 does not accept emails larger than 10MB. What can I do? http://www.servolutions.com/../support/articles/exchange2007sizelimit.htm Why is the spam checking taking so long? It takes 30 seconds for a single message! http://www.servolutions.com/../support/articles/slowspamcheck.htm What does the error message "[blacklist] could not be tested and will not be used" mean? http://www.servolutions.com/../support/articles/blacklistcouldnotbetested.htm Exchange does not accept any email from POPcon. Error message: "530 5.7.0 Must  issue a STARTTLS command first" http://www.servolutions.com/../support/articles/MustissueaSTARTTLScommand.htm 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? http://www.servolutions.com/../support/articles/forward_to_internet.htm Windows Data Execution Prevention is stopping or crashing the POPcon antivirus engine. What can I do? http://www.servolutions.com/../support/articles/data_execution_prevention.htm Only messages less than 10MB in size seem to come through, does POPcon impose a size limit? http://www.servolutions.com/../support/articles/sizelimit.htm How do I configure Exchange and POPcon if I want to handle only part of a domain? http://www.servolutions.com/../support/articles/branchoffice.htm Mail does not reach mail-enabled public folders. What could be the reason? http://www.servolutions.com/../support/articles/publicfolder.htm 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? http://www.servolutions.com/../support/articles/forwardtocatchall.htm How can I enable non-delivery reports (NDRs) to external mail senders in Exchange 2003? http://www.servolutions.com/../support/articles/config_ndr.htm How do I configure CSCatchAll? The Administrator utility only allows me to enter a license code. http://www.servolutions.com/../support/articles/howtoconfigurecscatchall.htm Why does POPcon need to know the "accepted domains" on the POP3/IMAP config tab? http://www.servolutions.com/../support/articles/whyaccepteddomains.htm I installed CSCatchAll and configured a catch-all account but it does not seem to work at all! What can I check? http://www.servolutions.com/../support/articles/cscatchalldoesnothing.htm "Out of Office" messages are returned to internal users but not external users on the internet. Is this a problem of POPcon? http://www.servolutions.com/../support/articles/outofoffice.htm Can I use POPcon to download email from Gmail accounts? http://www.servolutions.com/../support/articles/gmail.htm The new version 3.20 of POPcon can download IMAP email. Can it download email from AOL accounts with this? http://www.servolutions.com/../support/articles/aol.htm Exchange does not accept some email from POPcon and keeps saying "550 5.7.1 Requested action not taken: message refused"! http://www.servolutions.com/../support/articles/messagerefused.htm Exchange/SMTP connection was unexpectedly closed or error message "454.5.7.3 Client does not have permission to submit mail to this server." http://www.servolutions.com/../support/articles/connectionclosed.htm POPcon says that it drops copies of downloaded email - what causes this message? http://www.servolutions.com/../support/articles/droppedcopy.htm What could be the reason for ''Mail transfer to exchange failed, reason: Connection to host denied'' ? http://www.servolutions.com/../support/articles/connectiontohostdenied.htm How can I diagnose malfunctioning antispam blacklist server lookups? http://www.servolutions.com/../support/articles/diagnosespamservers.htm How can I resend already downloaded messages? http://www.servolutions.com/../support/articles/howtoresend.htm 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. http://www.servolutions.com/../support/articles/unknownrejected.htm POPconAdmin does not work or has problems communicating with my POPcon service? http://www.servolutions.com/../support/articles/adminonlyexit.htm There are .msg files in the POPcon folder with undistributed emails left after we solved an Exchange problem. How can we redistribute them? http://www.servolutions.com/../support/articles/undistributedmsgfiles.htm POPcon does not install on my machine. What can I do? http://www.servolutions.com/../support/articles/noinstall.htm The distribution of incoming emails from a mailing list does not work correctly. What can I do? http://www.servolutions.com/../support/articles/mailinglist.htm Can I start the mail retrieval cycle from the command line (.bat, etc.) ? http://www.servolutions.com/../support/articles/popcontrigger.htm All emails are suddenly tagged as SPAM after a period of no problems with the antispam feature! http://www.servolutions.com/../support/articles/allspam.htm How can I get rid of downloaded emails that are stuck in POPcon's queue? http://www.servolutions.com/../support/articles/deleteamail.htm Will I lose emails if my Exchange Server happens to be down when POPcon tries to send emails there? http://www.servolutions.com/../support/articles/whatwhennoserver.htm How can I get POPcon to not work with my ISA-Server (proxy) ? http://www.servolutions.com/../support/articles/isaserver.htm What can I do about the error message "Host did not acknowledge DATA command [554. 5.5.2 No valid recipients]"? http://www.servolutions.com/../support/articles/novalidrecipients.htm Is there a trace of POPcon's actions somewhere so we can check where email messages came from and where they went? http://www.servolutions.com/../support/articles/logfile.htm What do I do if all emails get forwarded to the postmaster because they "do not have local recipients"? http://www.servolutions.com/../support/articles/nolocalrecipient.htm POPcon hangs when my virus scanner deletes infected *.msg files from the POPcon folder! http://www.servolutions.com/../support/articles/hangwhenvirusmsgdel.htm POPcon downloads email ok, but can't reach my exchange server - what can I do? http://www.servolutions.com/../support/articles/downloadbutnofwd.htm BCC recipients do not receive the email, although recipients listed under TO: and CC: do. Any hints? http://www.servolutions.com/../support/articles/bcc.htm Does POPcon work with Exchange 2010? 2007? 2003? 2000?  5.5? SBS versions? http://www.servolutions.com/../support/articles/ex2000.htm Why is email to unknown recipients in my domain not forwarded to the postmaster? http://www.servolutions.com/../support/articles/unknownmailadr.htm