Outlook Express Error 421
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Error 421 Cannot Connect To Smtp Server
am able to receive mail and read mails using outlook express but not able to send them. it shows any one of the following errors. examples: An unknown error has occurred. Account: 'pop.mail.yahoo.com', Server: 'smtp.mail.yahoo.com', Protocol: SMTP, Server Response: '421 Cannot connect to SMTP server 68.142.203.143 (68.142.203.143:25), connect error 10061', Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67 The message could not be outlook error 421 too many messages sent because one of the recipients was rejected by the server. The rejected e-mail address was 'u0503667@nus.edu.sg'. Subject 'print this *****', Account: 'pop.nus.edu.sg', Server: 'smtp.nus.edu.sg', Protocol: SMTP, Server Response: '550 5.7.1 Unable to relay for u0503667@nus.edu.sg', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79 And for the IMAP server that i use it shows the following error when i try to send it. The server does not support a SSL connection. Account: 'stuimaphost.comp.nus.edu.sg', Server: 'mailauth.comp.nus.edu.sg', Protocol: SMTP, Server Response: '250 HELP', Port: 25, Secure(SSL): Yes, Server Error: 250, Error Number: 0x800CCC7D Apr 11, 2006 #1 Nodsu TS Rookie Posts: 5,837 +6 First: SMTP connection to the server failed. Something is blocking SMTP traffic - could be your ISP. Second: The server supports SMTP, but doesn't like you, or the recipient address. Third: You have configured Outlook to use SSL, but the port specified is 25 - plain SMTP. Where did you get these configurations? Why do you think any of these would work? Did they work before? Apr 11, 2006 #2 jasonbourne TS Rookie Topic Starter I thought that these configurations worked bcoz i was abl
» Print Pages: [1] 2 Go Down Author Topic: Outlook Express error - 0x800ccc67 (Read 104895 times) 0 Members and 5 Guests are viewing this topic. pondiferus Newbie Posts: 1 Outlook Express error 421 email error - 0x800ccc67 « on: December 21, 2005, 03:28:18 AM » Hi
Server Error 421 Error Number 0x800ccc67
all.I am a newbie to Avast.Questionwhen sending a test message in Outlook Express i am encountering the following error
421 Message Rejected
:An unknown error has occurred. Account: 'mail.bigpond.com', Server: 'mail.bigpond.com', Protocol: SMTP, Server Response: '421 Cannot connect to SMTP server 144.140.90.10 (144.140.90.10:25), connect error 10060', Port: 25, Secure(SSL): No, Server Error: 421, http://www.techspot.com/community/topics/unable-to-send-mail-using-outlook-express.47951/ Error Number: 0x800CCC67so far I have:recreated the mail profileassured that OE is not set to block attachmentstelnetted to my mail server successfullycreated another identity in OENote: my ISP's mails server doesn't require secure password authentication to be enabledaside from reinstalling my OE, is there anything else I should do with avast!? This program is different in layout to every other antivirus I've https://forum.avast.com/index.php?topic=18176.0 used, I think there is some functionality in there somewhere that has slipped my attention and is causing this.Thanks for reading this Logged neal63 Avast Evangelist Super Poster Posts: 1824 Whew! What a Load... Re: Outlook Express error - 0x800ccc67 « Reply #1 on: December 21, 2005, 05:14:21 AM » While your ISP doesn't require Secure password authentication to be enabled under Incoming mail, it may be that under "Outgoing Mail Server" settings you may have to tick off "My server requires authentication". Logged "The problems that exist in the world today, cannot be solved by the level of thinking that created them." --Albert Einstein--" alanrf Avast Evangelist Massive Poster Posts: 3867 Just an avast user Re: Outlook Express error - 0x800ccc67 « Reply #2 on: December 21, 2005, 05:38:18 AM » Welcome to the avast! forum pondiferus.To help us maybe you can give us a little more information about your system.What operating system are you using? Are you using a firewall, if so, which one? Logged DavidR Avast Überevangelist Certainly Bot Posts: 75671 No support PMs thanks Re: Outlook Express error -
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A colleague of mine has encounters errors like: An unknown error has occurred. Account: ‘mail.different.bg', Server: ‘mail.different.bg', Protocol: SMTP, Server Response: ‘421 Cannot connect to SMTP server 212.70.124.241 (212.70.124.241:25), connect error 10060', Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67 while he was trying to send some emails with his Outlook Express mail client on his desktop computer running Windows XP, since he is not too much computer literate he contacted me for help on what is causing the error and how he can get through the issue and send the prepared emails to the destinations ASAP. After I have asked him a few questions necessary to better understand the status of the problem and where does it originated I have come to the conclusion that it's very likely that his outgoing SMTP port (25) outgoing TCP/IP traffic passing through the Internet Service Provider is filtered. When the 421 Cannot connect to SMTP server problem occured, he was actually in his parents house provided with an internet connection through a BTC ADSL see BTC (Vivacom)'s ADSL page for reference I have instructed my friend to try connecting to the SMTP (25) port of the questionable email server using window's telnet client i order to check if my assumption that the outoging SMTP 25 port traffic is filtered. I instructed him to issue a command like which is so common this days and it's not news to the Sysadmins out there: cmd> telnet mail.server.net 25 This prooved my theory that the 421 Cannot connect to SMTP server was caused by a filtered traffic on the outgoing network STMP port (25). Some Internet Providers out there has that annoying practice of filtering the outgoing SMTP connections, because they couldn't deal with infected Windows computers who start acting as a SPAM networks in another more clever way, however I should admit this is pretty dumb, since it creates numerous problems to the end user like in this particular case. The temporary work around for him that I suggested was to use the mail server Webmail Interface before he moves back with his notebook back to his ISP at home which doesn't includ