Support Center » Knowledgebase » I am getting errors when I try to use my domain to send emails using my email client, but I can send just fine with my ISP SMTP settings.

Login [Lost Password]  Email: Password: Remember Me:    Search -- Entire Support Site -- Knowledgebase Downloads  Article Options  Print Article  PDF Version  E-mail Article  Add to Favorites  I am getting errors when I try to use my domain to send emails using my email client, but I can send just fine with my ISP SMTP settings. Solution Over the last few years, more and more ISP's have started to require their subscribers to use their SMTP server to send mail. This allows them to monitor spammers, and help to reduce to the overwhelming amounts of spam and exploitation that occurs daily with email. If you can not send email using our servers, check on this list below for your ISP or perform the test listed below. Provided with each ISP that blocks, is their respective SMTP server setting.This list has been compiled by the Support staff over the last year. It is not an official release of ISPs that require that there clients use their SMTP servers, however, it is as accurate as possible at this time. Testing SMTP server access: Access a command line (in Windows, Click Start -> Run, and then type in CMD; on a MAC, use the Terminal application in the Applications/Utilities folder.) Type in TELNET DOMAIN.COM 25 (replace DOMAIN.COM with your actual domain name) If you are not being blocked from your ISP, you should see the following message: 220-mail.myemailserv.com or mail.yourdomain.com ESMTP Sat, 21 Aug 2007 13:20:48 -0700  If you do not see this error message, your ISP is very likely blocking the ability to send mail through servers other than theirs. ISP's that Block Port 25 AOL: smtp.mail.aol.com Adelphia: mail.adelphia.net Ameritech: mailhost.det.ameritech.net Astound Broadband: smtp.ca.astound.net AT&T: mailhost.att.net AT&T Global: smtp1.attglobal.net Bell internet highspeed (Canadian): smtp10.bellnet.ca Bell south: mail.bellsouth.net bigpond.com (Australian): contact service provider for Settings. Bresnan Communications: mail.bresnan.com BT Yahoo in the UK: contact service provider for Settings. CableOne: mail.cableone.net Charter Communications: smtp.chartermi.net Charter.net: smtp.charter.net CharterTN.net: mail.chartertn.net CharterMI.net: mail.chartermi.net Cinncinnati Bell/Fuse Dial-up: smtp.fuse.net coax.net: smtp.west.coax.net /east / central comcast: smtp.comcast.net Cox: smtp.west.cox.net - smtp.central.cox.net - smtp.east.cox.net Earthlink: smtp.earthlink.net Etisalat (UAE): smtp.emirates.net.ae epix: out.epix.net erols: smtp.erols.com Frontiernet.net: smtp.frontiernet.net fuse: smtp.fuse.net Icehouse.net: mail.icehouse.net iquest.net: mail.iquest.net ISP.com: mail.isp.com Juno: smtp.juno.com Megared (Mexico): contact service provider for Settings. Mindspring: smtp.mindspring.com MSN: smtp.email.msn.com MSN.DSL: secure.smtp.email.msn.com NEBI.com: mail.nebi.com Netcom: smtp.ix.netcom.com NetZero: smtp.netzero.net OOL (Optimum Online): mail.optonline.net Optusnet: mail.optusnet.com.au Pacific Bell (Pacbell): mail.pacbell.net panix.com: mailhost.panix.com PeoplePC: smtp.peoplepc.com Plala: plala.or.jp Quixnet.net: smtp.quixnet.net RCN: smtp.rcn.com Road Runner(NYC): smtp-server.nyc.rr.com (for other states, and regions contact your Road Runner Support team) Rogers Hi-Speed (Canadian): smtp.broadband.rogers.com SBC: smtp.sbcglobal.net SBC Yahoo: smtp.sbcglobal.yahoo.com Shaw.ca: shawmail Speakeasy: mail.speakeasy.net Suddenlink: smtp.suddenlink.net Sympatico: smtp1.sympatico.ca Telus: check with ISP The-Beach.net: mail.the-beach.net Verio: smtp.veriomail.com Verizon: outgoing.verizon.net (please note that Verizon FIOS should not have any issues with SMTP blocking, only the DSL or other services) Verizon(alt): smtpout.verizon.net (please note that Verizon FIOS should likely not have any issues with SMTP blocking, only the DSL or other services) Videotron: relais.videotron.ca yourlink.ca (Canadian): contact service provider for Settings. Puget Sound Network, Inc. : contact service provider for Settings: http://psni.com Article Details Article ID: 54 Created On: 23 Aug 2007 11:18 AM  This answer was helpful  This answer was not helpful  Back

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