Hi Thanks for your ideas but it still doesn't work. I am sure the DNS TTLs will have times out by now. On other interesting thing is if I telnet from my UNIX box to 123-reg and try to send a message that exim handles the domain from I get the following:
telnet mx0.123-reg.co.uk 25 Trying 195.224.48.125... Connected to mx0.123-reg.co.uk. Escape character is '^]'. 220 two.mx.123-reg.co.uk ESMTP Exim 4.43 Tue, 19 Dec 2006 14:48:13 +0000 helo gdmckee.com 250 two.mx.123-reg.co.uk Hello 82-36-186-17.cable.ubr03.soli.blueyonder.co.uk [82.36.186.17] mail from: [EMAIL PROTECTED] 250 OK rcpt to: [EMAIL PROTECTED] 550 data 503 valid RCPT command must precede DATA quit Connection closed by foreign host. Then if I try from my other address from the exchange server I get a different message. telnet mx0.123-reg.co.uk 25 Trying 195.224.48.124... Connected to mx0.123-reg.co.uk. Escape character is '^]'. 220 three.mx.123-reg.co.uk ESMTP Exim 4.43 Tue, 19 Dec 2006 14:49:12 +0000 helo gdmckee.com 250 three.mx.123-reg.co.uk Hello gdmckee.com [82.36.186.17] mail from: [EMAIL PROTECTED] 250 OK rcpt to: [EMAIL PROTECTED] 550-Verification failed for <[EMAIL PROTECTED]> 550 Sender verify failed Many thanks Gordon ----- Original Message ----- From: "Mike Cardwell" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, December 18, 2006 5:11 PM Subject: Re: [exim] Callforward Verification >* on the Mon, Dec 18, 2006 at 04:56:05PM -0000, Gordon McKee wrote: > >> I have an exim front end server and an exchange backend server. All >> seems >> fine except that I can't send emails to users on 123-reg's server. all >> messages come back as: >> >> [EMAIL PROTECTED] >> >> SMTP error from remote mail server after RCPT >> TO:<[EMAIL PROTECTED]>: >> >> host mx0.123-reg.co.uk [195.224.48.120]: 550-Verification failed for >> <[EMAIL PROTECTED]> >> >> 550 Sender verify failed > > There's nothing there to suggest 123-reg's mx's are doing callouts. It > might be failing because the MX records for optimalprofit.com are: > > mail-1.optimalprofit.com > mail-2.optimalprofit.com > > These are cnames, yet should be A records. > > Just a guess. > > Mike > > -- > ## List details at http://www.exim.org/mailman/listinfo/exim-users > ## Exim details at http://www.exim.org/ > ## Please use the Wiki with this list - http://www.exim.org/eximwiki/ > -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
