On Sunday 20 September 2009, Daniel Troeder wrote: > On Sun, 2009-09-20 at 21:38 +0100, Mick wrote: > > On Sunday 20 September 2009, Harry Putnam wrote: > > > Mick <[email protected]> writes: > > > > -----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? > > > > > > > > Is there something I could change in the configuration of my server > > > > to make this work again? > > > > > > I think you might avoid the problem by making sendmail Impersonate your > > > isps domain. > > > > > > Using some or all of these settings in sendmail.mc > > > MASQUERADE_AS(`yourISP.domain')dnl > > > MASQUERADE_DOMAIN(`youractual.domain')dnl > > > FEATURE(masquerade_entire_domain)dnl > > > FEATURE(masquerade_envelope)dnl > > > > Yes, that should fix the reverse DNS problem alright, but then people who > > receive email notifications from myserver will be confused by the domain > > that these messages are sent from. > > I don't know this sendmail feature, but I think sendmail should not > modify your message, but just the envelop. So `youractual.domain' would > still be in the "To"-header, while `yourISP.domain' is in the envelop. > That should make your ISP happy, and no receiver will ever notice > (except if they look at the headers), because MUAs only show the > "To"-header :) > > Your ISP could still check the "To"-header - but that would be just > plain ugly... > > > I could also use the ISP's domain for my IP address in the server's > > /etc/hosts file - although it would have the same problem with regards to > > the domain that messages are sent from.
I will give it a go - hopefully the ISP will be happy and I won't need to register with a mail relaying service. Thanks for your suggestions. -- Regards, Mick
signature.asc
Description: This is a digitally signed message part.
