Re: [Exim] Sender Verify

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Author: Giuliano Gavazzi
Date:  
To: Ron McKeating, Exim-Users (E-mail)
Subject: Re: [Exim] Sender Verify
At 12:16 pm +0100 2004/05/20, Ron McKeating wrote:
[...]
>2004-05-19 00:01:14 F=<Elviragbp@???> RCPT
><d.gillingwater@???>: Bad HELO: ggyxnij (unqualified-helo)
>
>Is the Elviragbp@??? connecting to our server and asking to send


it is not Elviragbp@??? connecting to your server, it is
12.218.115.74 connecting, as you can see below

>mail to <d.gillingwater@???> and we accept that though we log the
>unqualified domain in the helo, then


have your logs a little less detailed and you will not even see that line...

>2004-05-19 00:01:14 H=12-218-115-74.client.mchsi.com (ggyxnij)
>[12.218.115.74] sender verify fail for <Elviragbp@???>: all
>relevant MX records point to non-existent hosts or (invalidly) to IP
>addresses
>
>This is checking that z45rcv.com is valid (which it isn't as a dig
>lookup gives
>
>;; ANSWER SECTION:
>z45rcv.com.             1152    IN      MX      10 218.106.116.147.

>
>and I assume from the log entry that this should be a hostname not an ip
>address. So it does not matter whether mchsi.com is valid or not just
>the senders domain.


of course. It is sender verify after all, not connecting server PTR verify...

>Why did the header change from HELO: ggyxnij in the first log entry to
>H=12-218-115-74.client.mchsi.com (ggyxnij), why is this helo bad?


what header are you talking about? Nothing has changed. The string
after the H= is the PTR (reverse DNS) for the incoming IP, the string
in parenthesis is the HELO argument.

>2004-05-19 00:01:14 H=12-218-115-74.client.mchsi.com (ggyxnij)
>[12.218.115.74] F=<Elviragbp@???> rejected RCPT
><d.gillingwater@???>: Sender verify failed
>
>Then we reject the message. Is this correct, I just want to be sure I
>have understood it properly.


of course it is correct, it is exim doing it after all!

Giuliano