Re: SMTP 550 5.7.1 unable to relay for user@company.com
From: Evan Mann (ask_at_for.it)
Date: 03/21/04
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Date: Sun, 21 Mar 2004 13:22:44 GMT
This should be an easy one, you need to get into your PIX and into enable
mode:
no fixup prot smtp 25
The Fixup Protocol for SMTP in the PIX only always the originaly 8 or so
SMTP commands specified by RFC. I'm assuming your users are trying to
authenticate via POP3 or SMTP and send to external recipients. Well in
order to do that, they need to be able to relay. To relay you need to use
an AUTH command which is NOT part of the original SMTP commands, so Fixup on
the PIX blocks it. Disabling fixup is theonly way to fix your problem, if
your problem falls into this situations.
"Psycho" <anonymous@discussions.microsoft.com> wrote in message
news:c25901c40ef4$5fbd3120$a001280a@phx.gbl...
> Yes actually, it is a Cisco PIX firewall.
>
> Psycho
> >-----Original Message-----
> >you using a cisco pix firewall by any chance?
> >
> >--
> >David Sengupta M.T.S., B.Sc., MVP, MCSE, MCSE 2000, CCA
> Ottawa, Canada
> >Exchange Reporting & Analysis:
> http://www.quest.com/messagestats/
> >Exchange FAQ - http://www.swinc.com/resource/exch_faq.htm
> >
> >
> >"Psycho" <Psycho@Psychotic.net> wrote in message
> >news:%23bay5VhDEHA.3016@TK2MSFTNGP11.phx.gbl...
> >> Hello,
> >>
> >> We are using Exchange 2003 and our users are having
> trouble sending to a
> >> certain recipient outside of our orginization.
> >>
> >> Basically we have a mailbox created for this user and
> we forward all his
> >> e-mail from the mail box to the custom contact we
> created in AD. This
> >> has been working for quite some time.
> >>
> >> However, we are now getting NDR's with the following
> message
> >>
> >> "you do not have permission to send to this recipient.
> user@company.com
> >> For assistance, contact your system administrator.
> >> <exchange.namco.com #5.7.1 smtp;550 5.7.1
> Unable to relay
> >> for user@company.com>"
> >>
> >> I checked the event viewer and the ID for the event is
> 7004 and
> >> Microsofts webs site has NO INFORMATION regarding this
> event ID.
> >>
> >> Any suggestions on what to do would be greatly
> appreciated, Thank you in
> >> advance.
> >>
> >> Psycho
> >
> >
> >.
> >
>
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