550 - relay not permitted

[#1]

Hi, folks,
I am trying to reply to an email, but I'm getting delivery failure notifications with this error. I am using a charity domain name hosted by 1and1. I understand some ISPs block relayed mail, although this is the first time I have seen it. If I reply form home it is being relayed through PN, of course. I get the same notification if I reply from work (relayed through their ISP, Eclipse), and, strangely, even if I log on to 1and1 webmail and try to send it from there.
I could send it from my PN address, but it looks better coming from the charity domain. Any way round this?

[#2]

Its normally blocked by ip so if you are on plus net you try to send with a plusnet ip the same at work but webmail should work or there isnt much point having it. Who has the MX record for the domain do you know? They should be able to set it to allow mail via plusnet if they want  to that is
Depending on the software you use for email you should be able to set the return address to the charity which may do but the header would show it comes via plusnet if anyone looked.

[#3]

Can you post the error message? SWMBO uses the 1and1 webmail to send mail with no issues from both her office and my parents with no issues.
Also uses the 1and1 relay (with authentication) from our PN line..

[#4]

Does your domain have an spf record?

[#5]

Quote from: Bob

Does your domain have an spf record?

It appears not. Is it worth asking our webmaster to look into it?

Quote from: adiewoo

Can you post the error message? SWMBO uses the 1and1 webmail to send mail with no issues from both her office and my parents with no issues. Also uses the 1and1 relay (with authentication) from our PN line..

I only have 1 message to hand here at work. Tried to send this relayed through Eclipse.

Quote

The following message to <xxxx@xxxx.com> was undeliverable. The reason for the problem: 5.1.0 - Unknown address error 550-'relay not permitted' Reporting-MTA: dns; smtpout.karoo.kcom.com Final-Recipient: rfc822;xxxx@xxxx.com Action: failed Status: 5.0.0 (permanent failure) Remote-MTA: dns; [83.170.64.235] Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'relay not permitted' (delivery attempts: 0)

The others are similar, but have come through different servers i.e. not all from Karoo.

Quote from: Samuria

Who has the MX record for the domain do you know?

1and1, who host the domain.

[#6]

If it helps, here is another failure notification, resulting from the attempt to send by 1and1 webmail. A third sent from home using the same account, but relayed through PN gave basically the same message, but with "X-Mailer: webmail" replaced by "X-Mailer: Evolution 2.24.3".

Quote

This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. The following addresses failed:   <xxxx@xxxx.com> SMTP error from remote server after RCPT command: host uk2mxarray3.uk2.net[83.170.64.214]: 550 relay not permitted --- The header of the original message is following. --- Received: from pustefix157.kundenserver.de (pustefix157.kundenserver.de [172.23.4.157])         by mrelayeu.kundenserver.de (node=mreu1) with ESMTP (Nemesis)         id 0MKv1o-1Ltjob4BWd-000jvW; Tue, 14 Apr 2009 16:40:46 +0200 Message-Id: <26856265.1976971239720046017.JavaMail.servlet@kundenserver> From: yyyy.yyyy@yyyy.org.uk To:  <xxxx@xxxx.com> Subject: RE: xxxxxxxxx Cc:  <zzzz_zzzz@yyyy.org.uk> MIME-Version: 1.0 Content-Type: multipart/alternative;         boundary="----=_Part_106205_1826661.1239720045966" X-Priority: 3 X-Binford: 6100 (more power) X-Mailer: Webmail X-Originating-From: 30183427 X-Routing: UK X-Message-Id: <30183427$1239720045966172.23.4.157835882@pustefix157.kundenserver.de--1016514742> X-Received: from pustefix157.kundenserver.de by 91.85.64.161 with HTTP id 30183427 for [xxxx@xxxx.com]; Tue, 14 Apr 2009 16:40:45 CEST Date: Tue, 14 Apr 2009 16:40:45 +0200 X-Provags-ID: V01U2FsdGVkX1+S+YLzHSWGHjdBse9wx0r9NAI4i2RCqL98Sid Nex+NQ13cxBeEppHvjEIWJwUUKfDO6Bvf7/C+nQ1fXRWzwjAG3 rfaULTiPT0=

Oh, good grief! I tried sending a reply direct from my PN address, and as I was typing have just got another error message Sorry for the length, but here is the full source minus the content, in case it reveals anything.

Quote

Return-path: <> Envelope-to: xxxx@username.plus.com Delivery-date: Wed, 15 Apr 2009 22:14:45 +0100 Received: from [212.159.7.39] (helo=mx.ptn-ipin04.plus.net) by fhw-inmx06.plus.net with esmtp (PlusNet MXCore v2.00) id 1LuCRR-0005tC-5g for xxxx@username.plus.com; Wed, 15 Apr 2009 22:14:45 +0100 Authentication-Results: mx.ptn-ipin04.plus.net; dkim=neutral (message not signed) header.i=none Received-SPF: None identity=pra; client-ip=84.92.2.97; receiver=mx.ptn-ipin04.plus.net; envelope-from=""; x-sender="MAILER-DAEMON@relay.ptn-ipout01.plus.net"; x-conformance=sidf_compatible Received-SPF: None identity=mailfrom; client-ip=84.92.2.97; receiver=mx.ptn-ipin04.plus.net; envelope-from=""; x-sender="postmaster@relay.ptn-ipout01.plus.net"; x-conformance=sidf_compatible Received-SPF: None identity=helo; client-ip=84.92.2.97; receiver=mx.ptn-ipin04.plus.net; envelope-from=""; x-sender="postmaster@relay.ptn-ipout01.plus.net"; x-conformance=sidf_compatible X-SBRS: 5.3 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Aj4DADPr5UlUXAJhmWdsb2JhbACNRwGIUgEBAQEBCAsKBxFDqm8Ih2WKbg4IgTg X-IronPort-AV: E=McAfee;i="5300,2777,5585"; a="63119632" X-IronPort-AV: E=Sophos;i="4.40,194,1238972400";  d="scan'208";a="63119632" Received: from mx.ironport.plus.net (HELO relay.ptn-ipout01.plus.net) ([84.92.2.97]) by mx.ptn-ipin04.plus.net with ESMTP; 15 Apr 2009 22:14:44 +0100 Received: from localhost by relay.ptn-ipout01.plus.net; 15 Apr 2009 22:14:41 +0100 Date: 15 Apr 2009 22:14:41 +0100 To: xxxx@username.plus.com From: "Mail Delivery System" <MAILER-DAEMON@relay.ptn-ipout01.plus.net> MIME-Version: 1.0 Content-Type: multipart/report; report-type=delivery-status; boundary="+rSv.4PvvlctUy.U87bo.E+5bBeR" Message-ID: <E1LuCRR-0005tC-5g@fhw-inmx06.plus.net> X-PN-Virus-Filtered: by PlusNet MXCore (v5.00) X-PN-Spam-Filtered: by PlusNet MXCore (v5.00) Subject: Delivery Status Notification (Failure) X-Evolution-Source: pop://username@mail.plus.net/ --+rSv.4PvvlctUy.U87bo.E+5bBeR content-type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The following message to <xxxx@xxxx.com> was undeliverable. The reason for the problem: 5.1.0 - Unknown address error 550-'relay not permitted' --+rSv.4PvvlctUy.U87bo.E+5bBeR content-type: message/delivery-status Reporting-MTA: dns; relay.ptn-ipout01.plus.net Final-Recipient: rfc822;xxxx@xxxx.com Action: failed Status: 5.0.0 (permanent failure) Remote-MTA: dns; [83.170.64.212] Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'relay not permitted' (delivery attempts: 0) --+rSv.4PvvlctUy.U87bo.E+5bBeR content-type: message/rfc822 Received: from ptb-relay03.plus.net ([212.159.14.147]) by relay.ptn-ipout01.plus.net with ESMTP; 15 Apr 2009 22:14:10 +0100 Received: from ptb-relay03.plus.net ([212.159.14.147]) by relay.ptn-ipout01.plus.net with ESMTP; 15 Apr 2009 22:14:10 +0100 Received: from [212.159.113.65] (helo=[192.168.1.64]) by ptb-relay03.plus.net with esmtp (Exim) id 1LuCQs-0002az-Kw; Wed, 15 Apr 2009 22:14:10 +0100 Subject: Re: xxxxxxx From: Denzil Searle <xxxx@username.plus.com> Reply-To: xxxx@username.plus.com To: xxxx <xxxx@xxxx.com> Cc: zzzz_zzzz@yyyy.org.uk In-Reply-To: <000001c9bcdf$ed3e45e0$c7bad1a0$@com> References: <000001c9bcdf$ed3e45e0$c7bad1a0$@com> Content-Type: text/plain Date: Wed, 15 Apr 2009 22:14:09 +0100 Message-Id: <1239830049.5876.4.camel@denzil-desktop> Mime-Version: 1.0 X-Mailer: Evolution 2.24.3 Content-Transfer-Encoding: 7bit X-Plusnet-Relay: a08a3ab3a235175b5ab8e40cb42fd3a0

[#7]

I have got someone else to try with the same result, so I think it must be an issue with the recipient's domain host. I have looked up the domain and found some ownership details, so I'll try to contact them that way.

[#8]

You may want to try this to test if it's a valid address. Go to the blue box near the bottom and enter the address you are sending to.

[#9]

Below are the results that I get using the above link testing a domain I have with a mx record that's pointing to my mail server but the mail server has not be configured to receive emails for this domain.

Quote

Resolving host name "mail.xxxxxxxx.me.uk"... Connecting to host address "xxx.xxx.x.xxxx"... Connected. S 220 mail.xxxxxxxxxxxxx.me.uk ESMTP (Code-Crafters Ability Mail Server 2.63) C HELO find-ip-address.org S 250 mail.xxxxxxxxx.me.uk C MAIL FROM: <admin@find-ip-address.org> S 250 Email address accepted. <admin@find-ip-address.org> C RCPT TO: <fred@xxxxxxxxxx.me.uk> S 550 Account is not local, relaying disallowed. <fred@xxxxxxxxxx.me.uk> This host states that the address is not valid. Disconnected.

[#10]

Aha, good call, itsme.

Quote

... C RCPT TO: <xxxx@xxxx.com> S 550 relay not permitted This host states that the address is not valid. Disconnected. xxxx@xxxx.com address is not a valid suitable e-mail box address.

So, if I can get in touch I can suggest what they need to do to start receiving emails!