[dba-Tech] SMTP error messages

Thanks Erwin, I'll delegate that upwards :-)


Jon

-----Original Message-----
From: Erwin Craps - IT Helps [mailto:Erwin.Craps at ithelps.be]
Sent: 05 April 2005 12:45
To: Discussion of Hardware and Software issues
Subject: RE: [dba-Tech] SMTP error messages



It is posible that the destination smtp server uses RDNS (reverse dns).

This means that, before actualy accepting a e-mail by the smtp server it
wil first check if the reverse dns of the e-mail domain corresponds with
the IP address from whom you are sending that e-mail.
If this reverse dns fails your e-mail will be rejected.

This can be resolved by asking your dns administrator (mostly your
domain registrar) to create a pointer to your fixed ip address.

But it can be something else to.
You could ask the destinator if they use reverse dns for SMTP.
Or maybe some kind of black and white listing could cause this to.


Erwin
 

-----Original Message-----
From: dba-tech-bounces at databaseadvisors.com
[mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of Jon Tydda
Sent: Tuesday, April 05, 2005 1:30 PM
To: Dba-Tech (E-mail)
Subject: [dba-Tech] SMTP error messages

Hi all
 
A user has asked me why our e-mails keep getting bounced from on
particular destination, and with a bit of investigation, I've found that
all the "bounces" are in fact error messages, simply saying "SMTP Error
Code 554 Transaction Failed". I've spent the past half hour on the web
trying to find out precisely what this means, and have come up with
absolutely nothing.
Does it just mean that it failed and no-one knows why? How do I fix it?
 
 
Jon


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The information in this e-mail is confidential and may also be legally
privileged. The contents are intended for recipient only and are subject
to the legal notice available on request from : webmaster at alcontrol.co.uk
ALcontrol Laboratories is a trading division of ALcontrol UK Limited.
Registered Office: Templeborough House, Mill Close, Rotherham, S60 1BZ.
Registered in England and Wales No 4057291