Well like most Firewalls they lock everything and you have to punch holes in it. Relaying should be allowed to those that successfully Authenticate. Check your setting for same.
----- Original Message ----- From: "Robert Williams" <[EMAIL PROTECTED]> To: "Exchange Discussions" <[EMAIL PROTECTED]> Sent: Monday, October 21, 2002 1:38 PM Subject: RE: Need help with "550 5.7.1 Bad recipient format -- possible re lay attempt" error > 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] > _________________________________________________________________ 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]
