Cada proveedor de servicios de internet generalmente ofrece su propio servidor smpt. Esta es una lista de servicios de smtp de los principales proveedores de servicios de internet:
•Amaze.net.au: mail.amaze.net.au
•Ameritech DSL: mailhost.col.ameritech.net
•aol: aol.com
•aol: za.mx.aol.com
•aol: zb.mx.aol.com
•aol: zc.mx.aol.com
•AT&T: smtp1.attglobal.net
•AT&T: mailhost.worldnet.att.net
•AT&T WorldNet: mailhost.att.net
•AT&T WorldNet: mailhost.worldnet.att.net
•Australink.net: mail.australink.net
•bellatlantic.net: smtpout.bellatlantic.net
•Bluelight.com: smtp.mail.yahoo.com
•BlueYonder: smtp.blueyonder.co.uk
•Bondinet.com: mail1.oznet.net.au
•Breathe: mailhost.breathemail.net
•bright.net: mail.bright.net
•Bt Click: mail.btclick.com
•Bt Connect: smtp.btconnect.com
•BT Internet: mail.btinternet.com
•BT Openworld: mail.btopenworld.com
•BusinessServe: smtp.businessserve.co.uk
•Cableinet: smtp.blueyonder.co.uk
•Claranet: relay.clara.net
•Comcast: smtp.comcast.net
•CompuServe 2000: smtp.cs.com
•CompuServe Classic: mail.compuserve.com
•Cox (east): smtp.east.cox.net
•Cox (west): smtp.west.cox.net
•CWCom: smtp.ntlworld.com
•DCAnet: postoffice.dca.net
•Demon: post.demon.co.uk
•Earthlink.net: smtp.earthlink.net
•Easynet: smtp.easynet.co.uk
•ee.net: mail.ee.net
•Freeinet.com: mail.ma.freei.net
•Freeserve/Wanadoo: smtp.freeserve.co.uk
•Freeserve: smtp.freeserve.net
•Free-Online: relay.free-online.co.uk
•Gateway: smtp.gateway.net
•Genie: mail.genie.co.uk
•Greenbank.net.au: mail.greenbank.net.au
•Hotkey.net.au: mail.hotkey.net.au
•ibm.net: smtp1.ibm.net
•IC24: smtp.ic24.net
•icdc.com: mailout.icdc.com
•INFOLINK.com: mail.nfolink.com
•Interlink: mail.your-net.com
•Inweb Networks: post.inweb.co.uk
•IronNet: mail.iron.net
•iwayNET: smtp.iwaynet.net
•Jade Inc.: mail.jadeinc.com
•Lineone: smtp.lineone.net
•Log on America: mail.loa.com
•Logicworld.com.au: mail.logicworld.com.au
•Lycos: smtp.lycos.co.uk
•Madasafish: smtp.madasafish.com
•MegaNet: smtp.meganet.net
•Microsoft’s MSN: smtp.email.msn.com
•MidOhio.net: mail.midohio.net
•MindSpring: smtp.mindspring.com
•MindSpring: mail.mindspring.com
•Mistral: smtp.mistral.co.uk
•MSN.com: smtp.email.msn.com
•MSN.DSL: secure.smtp.email.msn.com
•NamesToday: smtp.namestoday.ws
•netcom.com: smtp.ix.netcom.com
•netreach.net: smtp.netreach.net
•Netscapeonline: mailhost.netscapeonline.co.uk
•NetSet: mail.netset.com
•NetWalk.com: mail.netwalk.com
•netzero.net: smtp.netzero.net
•nextek.net: mail.nextek.net
•Nildram: smtp.nildram.co.uk
•nni.com: nni.com
•Northstar Data Systems: mail.nn.net
•NTL World: smtp.ntlworld.com
•OneTel: mail.onetel.net.uk
•OneTel: mail.onetel.com
•On-Ramp: mail.marion.net
•Ozemail.com.au: smtp.ozemail.com.au
•peoplepc: mail.peoplepc.com
•Phone Co-op: smtp-1.opaltelecom.net
•Pipex: smtp.dial.pipex.com
•Plus Net: relay.plus.net
•Prodigy: smtp.prodigy.net
•Purplenet: smtp.purplenet.co.uk
•rcn.com: smtp.rcn.com
•redbird.net: mail.redbird.net
•RichNet: mail.richnet.net
•Road Runner (Insight Communications): smtp-server.insight.rr.com
•Road Runner (Time Warner): smtp-server.columbus.rr.com
•Road Runner (Time Warner): smtp-server.nc.rr.com
•Screaming.Net: smtp.tiscali.co.uk
•Spire: mail.spire.com
•Supanet: smtp.supanet.com
•Telewest: smtp.blueyonder.co.uk
•Telocity: mail.telocity.com
•Tesco: smtp.tesco.net
•Tesconet: mail.tesco.net
•Tiscali: smtp.tiscali.co.uk
•Totalise: mail.totalise.co.uk
•TPG.com.au: mail.tpg.com.au
•TTLC: mail.ttlc.net
•UKGateway: smtp.ukgateway.net
•uu.net: uu.net
•V 21: smtp.v21.co.uk
•Verizon: smtp.verizon.net
•Virgin: smtp.virgin.net
•Vispa: mail.vispa.com
•voicenet.com: mail.voicenet.com
•Waitrose: smtpmail.waitrose.com
•Wanadoo: smtp.wanadoo.fr
•Webcom: smtp.webcom.com
•Which Online: mail.which.net
•Wide Open West: smtp.mail.wowway.com
•Wide Open West (users with @wideopenwest.com): smtp.mail.wideopenwest.com
•Worldonline: smtp.tiscali.co.uk
•Yahoo: smtp.mail.yahoo.com
•Yahoo: smtp.sbcglobal.yahoo.com
