It is common these days to use your ISP's outgoing SMTP mail server to send mail. This is cut down on spam created by viruses that would otherwise be allowed to send out their spam/virus emails. By forcing you to use their SMTP server this cuts down on this for all of us.
For you e-mail to work properly you must use the proper SMTP mail server settings. The following is a list of some of the more common providers.
Carrier | Server Address |
| Adelphia | mail.adelphia.net |
| America Online (AOL) | smtp.aol.com |
| Atlantic Broadband | smtp.atlanticbb.net |
| AT&T (Broadband) | mail.attbi.com |
| AT&T (Dialup) | smtp1.attglobal.net |
| AT&T Worldnet | mailhost.worldnet.att.net or imailhost.worldnet.att.net |
| BCPL | mail.bcpl.net |
| Bellatlantic | gtei.bellatlantic.net or smtpout.verizon.net> |
| Bellatlantic.net | smtpout.bellatlantic.net |
| Bellsouth | mail.bellsouth.net |
| Bestweb | smtp.bestweb.net |
| BEV | smtp.bev.net |
| Blacksburg | smtp.blacksburg.net |
| Blazenet | smtp.blazenet.net |
| Cable One | mail.cableone.net |
| CAIS | smtp.cais.net |
| CAPU | smtp.capu.net |
| Charm.net | smtp.charm.net |
| Charter Communications | smtp.charter.net |
| Citizen's Internet | smtp.swva.net |
| Comcast | smtp.comcast.net |
| Compuserve | smtp.compuserve.com or smtp.site1.csi.com |
| Concentric.net | smtp.concentric.net |
| Covad | smtp.covad.net |
| Cox West | smtp.west.cox.net(west coast users) |
| Cox Central | smtp.central.cox.net (central users) |
| Cox East | smtp.east.cox.net(east coast users) |
| Cox Business | smarthost.coxmail.com |
| Crosslink | smtp.crosslink.net |
| DCANET | smtp-relay.dca.net |
| Delmarva Online | mail-gw.dmv.com |
| Delta Net | smtp.deltanet.com |
| Direcway | smtp.direcway.com |
| DSL Extreme | smtp.dslextreme.com |
| Earthlink Network | mail.earthlink.net or smtp.earthlink.net |
Earthlink Network (International only) | ismtp.earthlink.net |
| Edge.net | mail.edge.net |
| Enter | smtp.enter.net |
| EROLS | mail.erols.com |
| Ezy | smtp.ezy.net |
| Flashcom | mail.flashcom.net or smtp.flashcom.net |
| Frontline.net | smtp.fcc.net |
| Full Channel | smtp.fullchannel.net |
| Gateway.net | smtp.Gateway.net |
| GTI | mail.gti.net |
| HotMail | mail.hotmail.com |
| IBM.Global net | smtp1.ibm.net |
| ioNet Inc | mail.ionet.net |
| Integra | smtp.integra.net |
| Interaccess.com | smtp.interaccess.com |
| Internet America | mail.airmail.net |
| Internet Highway | smtp.ihwy.com |
| ITOL | mail.itol.com |
| Juno | smtp.juno.com |
| Mediacom | mail.mchsi.com |
| Mediaone.net | smtp.ce.medione.net |
| MegaPath | mail.megapathdsl.net |
| MCI | mailrelay.mciworldcom.net mailrelay.internetmci.com |
| Mindspring | smtp.mindspring.com |
| MSN | smtp.email.msn.com |
| Nauticom | mail.nauticom.net |
| Netcom | smtp.ix.netcom.com |
| Netcom (Canada) | smtp.netcom.ca |
| Netscape | smtp.isp.netscape.com |
| NetZero | smtp.netzero.net |
| NYU.edu | smtp.nyu.edu |
| OLG.com | mail.olg.com |
| Omega Communications | smtp.i-plus.net |
| OPTOnline Internet Service | mail.optonline.net |
| Pacbell | mail.pacbell.net |
| Patriot Media | smtp.patmedia.net |
| PeoplePC Online | mail.peoplepc.com |
| Pipeline | smtp.pipeline.com |
| Prodigy | smtp.prodigy.net |
| PSI.net | relay.smtp.psi.net |
| PTD.net | promail.ptd.net port 25 |
| QIS | mail.qis.net |
| Qwest Internet Service | pop.dnvr.qwest.net |
| RCN | smtp.rcn.com |
| Rider.edu | enigma.rider.edu |
| RoadRunner | smtp-server..rr.com |
| SBC Global | smtp.sbcglobal.net |
| SBC Global Yahoo | smtp.sbcglobal.yahoo.com |
| Smallville Communications | mail.toto.net |
| SNiP | mail.snip.net |
| Spectrum DSL | mail.webstable.com |
| SprintLink | smtp.a001.sprintmail.com |
| Sprynet | m6.sprynet.com |
| Starpower | smtp.starpower.net |
| Sympatico | mailhost.sk.sympatico.ca |
| UMBC | smtp.gl.umbc.edu |
| USA.NET | mail.netaddress.usa.net |
| US Internet | smtp.usit.net |
| UUNet | mail.uu.net |
| Verizon Internet Services | outgoing.verizon.net or smtpout.verizon.net |
| Wide Open West | smtp.mail.wideopenwest.com |
| XO Communications | mail.njd.xo.com or smtp.concentric.net |
| Yahoo | smtp.mail.yahoo.com |
| Ziplink | smtp.ziplink.net |