Sender Callout fails when relaying via MWEB's SMTP server

[fixx]

Hi Guys.

Recently I noticed that email being sent from my firewall does not relay via smtp.mweb.co.za anymore. For some weird reason the callout fails. When I relay mail via my server at the Campus in Bryanston, it works perfect.

I run exim 4.63-5.el5_6.2 on CentOS 6.2.

The sender address is root at firewall.starbright.co.za. Now the MX lookup for firewall.starbright.co.za is fine fromt he looks of things:

dig -t mx firewall.starbright.co.za

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5_7.1 <<>> -t mx firewall.starbright.co.za
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5268
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;firewall.starbright.co.za. IN MX

;; ANSWER SECTION:
firewall.starbright.co.za. 45 IN CNAME starbright.mooo.com.

;; AUTHORITY SECTION:
mooo.com. 211 IN SOA ns1.afraid.org. dnsadmin.afraid.org. 1203260164 86400 7200 2419200 3600

;; Query time: 4 msec
;; SERVER: 168.210.2.2#53(168.210.2.2)
;; WHEN: Tue Mar 27 08:04:56 2012
;; MSG SIZE rcvd: 135

It points to starbright.mooo.com which is where it should point to. I can send email to root at firewall.starbright.co.za and it works fine, but the MWEB callout fails with the following error:

host smtp.mweb.co.za [196.28.80.20]: 550-Verification failed for <root@firewall.starbright.co.za>
550-Called: 41.135.85.231
550-Sent: RCPT TO:<root@firewall.starbright.co.za>
550-Response: 530 Relaying not allowed
550 Sender address rejected: Sending user unknown

Can someone please shed some light on the issue as I am lost? Is it an issue with MWEB's smtp server or is the problem somewhere with my configuration?

Thanks in advance.

 

[MWEBHelp]

Hi Guys.

Recently I noticed that email being sent from my firewall does not relay via smtp.mweb.co.za anymore. For some weird reason the callout fails. When I relay mail via my server at the Campus in Bryanston, it works perfect.

I run exim 4.63-5.el5_6.2 on CentOS 6.2.

The sender address is root at firewall.starbright.co.za. Now the MX lookup for firewall.starbright.co.za is fine fromt he looks of things:



It points to starbright.mooo.com which is where it should point to. I can send email to root at firewall.starbright.co.za and it works fine, but the MWEB callout fails with the following error:



Can someone please shed some light on the issue as I am lost? Is it an issue with MWEB's smtp server or is the problem somewhere with my configuration?

Thanks in advance.

Good Morning fixx, please provide me your MWEB account details and I will do my utmost to get you the assistance you require.

 

[The_Unbeliever]

What says the guys at starbright?

 

[fixx]

What says the guys at starbright?

Aaam, I am the guy at Starbright

 

[fixx]

Good Morning fixx, please provide me your MWEB account details and I will do my utmost to get you the assistance you require.

I don't see how my account details are relevant here. I have an MWEB ADSL account and thus should be able to relay mail via your network without any issues not so?

 

[PsyWulf]

Mweb account details: Has your phone number,mweb details and other relevant information handy,and can help pick up which radius you are authenticated to should that be a problem

To bypass this in the mean time use EHLO and authenticate with your mwebclientnumber@mweb.co.za and pppoe password to relay irrespective of callout verification failure

 

[MWEBHelp]

I don't see how my account details are relevant here. I have an MWEB ADSL account and thus should be able to relay mail via your network without any issues not so?

Fixx I require these details to get you some assistance, please provide them to me via direct message.

 

[guest2013-1]

550 Sender address rejected: Sending user unknown

Make sure you set the server to not try and authenticate to their SMTP servers