--On 8 September 2010 17:36:13 +0800 Ho-Ki Au <[email protected]> wrote:

> I'm trying to set up exim whose hostname is managed by a local dns server.
>  Let's say our domain is abc.com and the exim server is running on
> mail.abc.com.  When I tried to send mail using alpine on another host in
> the same domain, e.g. client.abc.com and specifying a sender address to be
> [email protected], exim refused to send the mail and log file showed:
>
> 2010-09-08 16:46:31 H=([192.168.1.60]) [192.168.1.60] F=<[email protected]>
> rejected RCPT <[email protected]>: Sender verify failed
> 2010-09-08 16:47:01 H=([192.168.1.60]) [192.168.1.60] sender verify fail
> for <[email protected]>: Unknown user
>
> However, if I changed the sender address to my company email address, e.g.
> [email protected], that exim successfully verified the sender.
> If I dig -t mx abc.com, it returned me the correct (internal) ip address
> in the 192.168.1.0/24 subnet.  Could someone tell me what exim was doing
> when it verified the sender address?  And how can I get it to send mail
> from [email protected]?  I do not want to disable require verify = sender

The error message is saying that the sender address is undeliverable. Fix 
the deliverability problem, and you'll be able to send email.

You should not use an undeliverable address as the SMTP return path, and 
will have problems delivering email to some remote sites (those that use 
sender verification callouts) if you do.

> Thanks.
>
> --
> -hoki



-- 
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
For new support requests, see http://www.sussex.ac.uk/its/help/



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