aol: za.mx.aol.com 
aol: zb.mx.aol.com 
aol: zc.mx.aol.com 
Amaze.net.au mail.amaze.net.au
Ameritech DSL: mailhost.col.ameritech.net 
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 
Bulldog ADSL: smtp.bulldogdsl.com
BlueYonder: smtp.blueyonder.co.uk 
Breathe: mailhost.breathemail.net 
bright.net: mail.bright.net 
BusinessServe: smtp.businessserve.co.uk
(aap.businessserve.co.uk for advanced access) 
BTClick: smtp.btclick.com 
BT Internet: mail.btinternet.com 
BT Openworld: mail.btopenworld.com
Bt Connect: smtp.btconnect.com 
Cableinet: smtp.blueyonder.co.uk
Comcast: smtp.comcast.net 
Claranet: relay.clara.net 
CWCom: smtp.ntlworld.com 
CompuServe 2000: smtp.cs.com 
CompuServe Classic: mail.compuserve.com
DCAnet: postoffice.dca.net 
Demon: post.demon.co.uk 
Earthlink.net: smtp.earthlink.net
ee.net: mail.ee.net 
Easynet: smtp.easynet.co.uk
Freeinet.com: mail.ma.freei.net 
Freeserve/Wanadoo: smtp.freeserve.co.uk 
Freeserve: smtp.freeserve.net
Gateway: smtp.gateway.net  
Genie: mail.genie.co.uk
Greenbank.net.au: mail.greenbank.net.au
Hotkey.net.au: mail.hotkey.net.au 
ic24: smtp.ic24.net 
ibm.net: smtp1.ibm.net
icdc.com: mailout.icdc.com 
Iomart: smtp.domain.ext
INFOLINK.com: mail.nfolink.com
Interlink: mail.your-net.com 
Inweb Networks: post.inweb.co.uk 
IronNet: mail.iron.net 
IwayNET: smtp.iwaynet.net
Lineone: smtp.lineone.net
Log on America: mail.loa.com 
Logicworld.com.au: mail.logicworld.com.au
Lycos: smtp.lycos.co.uk 
Jade Inc.: mail.jadeinc.com  
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
Mistral: smtp.mistral.co.uk 
NamesToday: smtp.namestoday.ws
Netscapeonline: mailhost.netscapeonline.co.uk 
Nildram: smtp.nildram.co.uk
NTLWorld: smtp.ntlworld.com
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  
nni.com: nni.com 
Northstar Data Systems: mail.nn.net
On-Ramp: mail.marion.net 
Ozemail.com.au: smtp.ozemail.com.au 
OneTel: mail.onetel.net.uk 
Pipex: smtp.dial.pipex.com
peoplepc: mail.peoplepc.com 
Phone Co-op: smtp-1.opaltelecom.net
Prodigy: smtp.prodigy.net 
Purplenet: smtp.purplenet.co.uk
rcn.com: smtp.rcn.com 
redbird.net: mail.redbird.net 
RichNet: mail.richnet.net   
Supanet: smtp.supanet.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 
UKGateway: smtp.ukgateway.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
Webcom: smtp.webcom.com  
Wide Open West: smtp.mail.wowway.com 
Wide Open West (users with @wideopenwest.com): smtp.mail.wideopenwest.com 
Which Online: mail.which.net 
Worldonline: smtp.tiscali.co.uk 
Yahoo: smtp.mail.yahoo.com 
Zen Internet : mailhost.zen.co.uk