Hello Folks, I want my sendmail to act as a relay server only for the domain xyz.com for that I have done the appropriate addition in my sendmailmc file the contents of which are as follows FEATURE(nocanonify)dnl FEATURE(masquerade_envelope)dnl FEATURE(use_cw_file)dnl FEATURE(use_ct_file)dnl FEATURE(nouucp)dnl FEATURE(relay_hosts_only)dnl define(`confTO_QUEUEWARN', `2d')dnl MAILER_DEFINITIONS MAILER(local)dnl MAILER(smtp)dnl and made a file /etc/mail/relay-domains whose contents are as follows xyz.com RELAY But when I try to send a mail as [EMAIL PROTECTED], it says sender domain must resolve. So I added the line FEATURE(accept_unresolvable_domains)dnl in my sendmail.mc Now mail as [EMAIL PROTECTED] gets accepted and also [EMAIL PROTECTED] gets accepted which essentially makes my mail server as a open relay server ( good for spammers ;-( I write my mails offline so they get queued on the server. Can anybody help me out of this situation such that I can sendmail as [EMAIL PROTECTED] but deny relaying for other domains ( such that mails from [EMAIL PROTECTED] get queued and others get access denied ) Any help would be appreciated Regards Khader -- Syed Khader Vali [EMAIL PROTECTED] (GPG:1024D/8C48BE8B) Key fingerprint = A910 EEB2 6D60 DCEF 4C2B 0AC0 AB71 C428 8C48 BE8B GratiSource Technologies http://gratisource.8m.com Hyderabad, India +91(40)211901 +91(40)211933 -------------------------------------------------------------------- The Linux India Mailing List Archives are now available. Please search the archive at http://lists.linux-india.org/ before posting your question to avoid repetition and save bandwidth.