I am running 5.5 SP4 and I have ESMTP turned on, I was wondering about the other settings noted below
-----Original Message----- From: Tony Hlabse [mailto:thlabse@;hotmail.com] Sent: Monday, October 21, 2002 11:36 AM To: Exchange Discussions Subject: Re: Need help with "550 5.7.1 Bad recipient format -- possible relay attempt" error If your running Exchange 2000 and I assuming this, you need the Firewall Software/Hardware to allow ESMTP protocol traffic for Messaging to flow. ----- Original Message ----- From: "Robert Williams" <[EMAIL PROTECTED]> To: "Exchange Discussions" <[EMAIL PROTECTED]> Sent: Monday, October 21, 2002 1:32 PM Subject: Need help with "550 5.7.1 Bad recipient format -- possible relay attempt" error > Can anyone tell me what to do here? > I just installed a Symantec Velociraptor firewall. > > Here is the message my firewall is showing, (I removed the original > email addresses to protect the innocent) > > smtpd Warning: Sender <[EMAIL PROTECTED]> SIZE=2844 from > [207.114.164.37] tried to send to '<[EMAIL PROTECTED]> > NOTIFY=FAILURE,DELAY ORCPT=rfc822;<[EMAIL PROTECTED]>' - 550 5.7.1 > Bad recipient format -- possible relay attempt > > > In my smpt protocol settings on the firewall I have the following > choices: of which only ESMTP is checked: > > > Enable ESMTP - Provides access to the Extended Simple Mail Transfer > Protocol. ESMTP is enabled by default. When it is enabled, the other > service extensions on this tab can be enabled. > > Enable AUTH (Authentication) - Allows client to send user name and password > to authenticate with the server. Authentication is enabled by > default. > > Note: SEF/SEVPN does not support authentication mechanisms that result > in the connection being encrypted. > > Enable ATRN (Authenticated turn) - Allows an on-demand mail relay from > the server to the client by turning the existing connection around. > ATRN is disabled by default. > > Enable ETRN (Extended turn- Allows the client to access mail. In this case, > the server is requested to initiate a separate connection to the > client for > the purpose of mail relay from server to the client. ETRN is disabled > by default. > > Enable EXPN (Expansion) - Allows for the expansion of mailing lists. > EXPN is > disabled by default. > > Caution: Enabling this option exposes information about your internal > network to untrusted sites and is therefore not recommended. > > Enable VRFY (Verify) - Allows verification of mail addresses. VRFY is > disabled by default. > > Caution: Enabling this option exposes information about your internal > network to untrusted sites and is therefore not recommended. > > > Should I have any other of these options checked to allow these emails > to pass thru? > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:leave-exchange@;ls.swynk.com > Exchange List admin: [EMAIL PROTECTED] > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:leave-exchange@;ls.swynk.com Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:leave-exchange@;ls.swynk.com Exchange List admin: [EMAIL PROTECTED]
