Renaud Allard wrote: > Hello,
>
> I am now using exim 4.60, and I noticed something quite strange to me in
> the logs when doing sender verification. Here is the relevant log line:
>
> 2006-02-09 11:38:28 H=c-24-63-184-85.hsd1.ma.comcast.net [24.63.184.85]
> sender verify fail for <yyrutebjkuwpbh@???>: response to
> "MAIL FROM:<>" from calligate2.cali.co.uk [62.172.47.141] was: 550
> 5.1.1 <mail.llorien.org-1139481506-testing@???> is not a
> valid mailbox
>
> However, how could the server possibly have answered "not a valid
> mailbox" at "MAIL FROM: <>" step?
>
> If I do it by hand, I just get:
> telnet calligate2.cali.co.uk 25
> Trying 62.172.47.141...
> Connected to calligate2.cali.co.uk.
> Escape character is '^]'.
> 220 digest2.cali.co.uk ESMTP server ready (Alligate v1.5.11.16-267.1-1.23)
> helo mail.llorien.org
> 250 digest2.cali.co.uk
> mail from: <>
> 250 OK
> rcpt to: <mail.llorien.org-1139481506-testing@???>
> 550 5.1.1 <mail.llorien.org-1139481506-testing@???> is
> not a valid mailbox
>
> Which seems ok. However Exim logged it from "MAIL FROM:" step.
>
Hi
I dont know much, about spam etc, but either this is a new spam technic and sender verify does not
handle it correctly, or worse, I think its a mis-confgured or crappy MTA (Alligate) that does not
follow simple SMTP rules.
Wonder if we cant tighen our sender / callback verify more?
