Publish SPF records so that SPF enabled servers will automatically know the spoofed from address isn't from you.
Erik On 4/13/06, jason p <[EMAIL PROTECTED]> wrote: > I've got a question that is somewhat similar to this. > > I've been getting a lot of spam, where the spammers are using my domain in > their From: address. Is there any way to force anything coming from one of > my domains to authenticate? An IP based solution won't completely work, > because we have roaming clients (salesmen) and another office with a dynamic > IP. > > Mail from mydomain.tld is in my spamassassin whitelist, in order to prevent > their legit mail from being stopped, so this spam always has a score of > around -95. > > Or, can anyone think of a better solution? > > Thanks, > Jason > > -----Original Message----- > From: Erik Espinoza [mailto:[EMAIL PROTECTED] > Sent: Thursday, April 13, 2006 3:10 AM > To: [email protected] > Subject: Re: [qmailtoaster] Reg: rcpthost issue > > You really shouldn't be editing that file unless you know what you are > doing. You should really stick to the vadddomain and qmailadmin. > > To answer your question, no. People can't telnet into your mail server > and spam using your domain outward. > > Thanks, > Erik > > On 4/12/06, Mohankumar <[EMAIL PROTECTED]> wrote: > > > > > > > > Hi, > > > > I had one doubt, > > > > If i add my local domains in rcpthost file then anybody can telnet my > server > > and by using any of our mail id they can send and receive a fake mail to > any > > of my mail clients, how can i restrict this? If remove the entries from > > rcpthost file then outside peoples can't able to send me a mail, it shows > > 553 sorry, that domain isn't in my list of allowed rcpthosts. > > > > > > > > Kindly give me a solution > > > > > > > > Regards > > > > G.Mohankumar > > > > Systems Administrator > > > > Altosys Software Technologies Limited > > > > 5th Floor, "Pottipati Plaza" > > > > No.77, Nungambakkam High Road, > > > > Nungambakkam, Chennai- 600 034 > > > > Ph: +91-44-28203548/49/51 Extn: 101 > > > > Mobile: 09840919355 > > > > www.altosys.co.in > > > > > > > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > > > This e-mail and any attachments may be confidential or legally privileged. > > > > If you received this message in error or are not the intended recipient, > you > > > > should destroy the e-mail message and any attachments or copies, and you > are > > > > prohibited from retaining, distributing, disclosing or using any > information > > > > contained herein. > > > > Please inform us of the erroneous delivery by return e-mail. Thank you for > > > > your cooperation. > > > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > > > > > --------------------------------------------------------------------- > QmailToaster hosted by: VR Hosted <http://www.vr.org> > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > --------------------------------------------------------------------- > QmailToaster hosted by: VR Hosted <http://www.vr.org> > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- QmailToaster hosted by: VR Hosted <http://www.vr.org> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
