On Sunday 20 September 2009, Stroller wrote: > On 20 Sep 2009, at 12:30, Mick wrote: > > ... > > -----The following addresses had permanent fatal errors----- > > <[email protected]> > > (reason: 550 5.1.0 <[email protected]> sender rejected : > > invalid > > sender domain) > > > > -----Transcript of session follows ----- > > > > ... while talking to smtp.ISP.com: > >>>> MAIL From:<[email protected]> SIZE=745 AUTH=<> > > > > <<< 550 5.1.0 <[email protected]> sender rejected : > > invalid sender > > domain > > 554 5.0.0 Service unavailable > > ================================================================ > > > > Does this fail because the ISP's reverse DNS on my dynamically > > allocated IP > > address resolves to an ISP domain instead of myserver.mydomain.com? > > I'm not quite clear. Does the myserver.mydomain.com resolve to the > server actually sending the mail? I think that may be what they're > asking for.
Thanks Stroller! That was it! For some reason the particular subdomain had been taken out of the list of DynDNS and therefore it would no longer resolve to the server's IP address. It goes to show ... start with the obvious things first. Thank goodness I did not started hacking the sendmail configuration! Ha, ha! -- Regards, Mick
signature.asc
Description: This is a digitally signed message part.
