Error 421 Cannot Connect To Server
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A colleague of mine has encounters errors like: An unknown error has occurred. Account: 421 cannot connect to smtp server ‘mail.different.bg', Server: ‘mail.different.bg', Protocol: SMTP, Server Response: ‘421 Cannot connect to SMTP 421 cannot connect to smtp server outlook 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 the server responded 421 cannot connect to smt 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 421 cannot connect to smtp server incredimail 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
Server Error 421 Sending Email
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
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CommunityCategoryBoardUsers turn on suggestions Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for http://forums.xfinity.com/t5/Email-Web-Browsing/URGENT-CANT-SEND-EMAIL-WITH-OUTLOOK-CLIENT/td-p/1926849 Search instead for Did you mean: 5,523,775 members 55 online now 1,723,301 discussions Xfinity Help and Support Forums > Internet > Email & Web Browsing > URGENT !! CANT SEND EMAIL WITH OUTLOOK CLIENT Back to Top URGENT !! CANT SEND EMAIL WITH OUTLOOK CLIENT Share Options Subscribe to RSS Feed Mark Topic as New Mark Topic as Read Float this Topic to 421 cannot the Top Bookmark Subscribe Printer Friendly Page All Forum Topics Previous Topic Next Topic Posted by SKORPION2012 11-21-2013 10:59 AM Edited on 11-21-2013 11:00 AM Regular Contributor View All Member Since: 11-12-2012 Posts: 149 Message 1 of 3 (7,730 Views) URGENT !! CANT SEND EMAIL WITH OUTLOOK CLIENT [Edited] Options Mark as New Bookmark Subscribe Subscribe to RSS Feed Highlight Print Report I have 421 cannot connect posted before but not yet recevd an answer, I cant send emails with my thirdparty outlook , they will always jump into the outbox and get stuck in there unsent , do I have to change portsettings ??An unknown error has occurred.Subject 'test'Server Error: 421Server Response: 421 Cannot connect to SMTP server 68.87.26.155 (68.87.26.155:25), NB connect error 1460Server: 'smtp.comcast.net'Windows Live Mail Error ID: 0x800CCC67Protocol: SMTPPort: 25Secure(SSL): No 0 Kudos 2 REPLIES Posted by reasd 11-21-2013 11:59 AM Silver Problem Solver View All Member Since: 02-22-2007 Posts: 6,247 Message 2 of 3 (7,721 Views) Re: URGENT !! CANT SEND EMAIL WITH OUTLOOK CLIENT Options Mark as New Bookmark Subscribe Subscribe to RSS Feed Highlight Print Report http://forums.comcast.com/t5/E-Mail-and-Xfinity-Connect-Help/Port-Change-Notification/td-p/1470331 1 Kudo Posted by SKORPION2012 11-21-2013 01:35 PM Regular Contributor View All Member Since: 11-12-2012 Posts: 149 Message 3 of 3 (7,673 Views) Re: URGENT !! CANT SEND EMAIL WITH OUTLOOK CLIENT Options Mark as New Bookmark Subscribe Subscribe to RSS Feed Highlight Print Report Thanks ..got it..knew it was a port setting problem..thanks again 0 Kudos All Forum Topics Previous Topic Next Topic Popular Help Articles Set up your remote con