Benchmark Reviews Discussion Forum Right Header

Go Back Benchmark Reviews Discussion Forum > Software > Web Design & Development

Web Design & Development Discussion ranging from HTML to SEO, PHP to XML, and everything else inbetween.

Reply
Thread Tools Display Modes
#1
Unread 19th November 2008, 02:04 PM
Olin Coles's Avatar
Olin Coles Olin Coles is offline
Executive Editor
Join Date: Feb 2007
Posts: 2,951
Sendmail Error Solved: "550 Relaying denied."

After having so-called Sendmail experts install and configure Sendmail v8.14.3 along with Dovecott, I found that email sent outside the server from a mail client (such as Outlook) would receive one of the followng "550 Relaying denied" errors "Relaying denied. Proper authentication required.", or "550 Relaying denied. IP name lookup failed", or "550 Relaying denied. IP name possibly forged.".

My experts gave me the run-around, and claimed it was because of my ISP, or a spam filter, etc. The truth is, this sendmail error message is because they're not really experts.

Beginning with Sendmail v8.9, open mail relay is disabled by default and you will receive a "550 Relaying denied" error when you send mail to anyone outside of your host domain. To correct this problem, you can add domains to your /etc/mail/relay-domains file. This is where your day can be either short or long, depending on who you plan on sending mail to.

So rather than listing the 1000+ domains I send my newsletter to, I found something even easier. Instead of listing "gmail.com", Sendmail will also accept ".com". So in short, you can simply put the top-level domain extensions like ".net" or ".org" (without quotes). So if you're getting "550 Relaying denied" errors, it could be that you simply need to add the most popular domain extensions to your relay-domains file.
__________________
You can follow Benchmark Reviews on Facebook and Twitter!
Reply With Quote
Sponsored links
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
The perpetual "What's Next for Computer Hardware" thread... Olin Coles General Hardware Forum 8 28th June 2010 03:34 PM
Business Sector Finally "Gets It" w/ SSDs Bruce Normann Member News 1 3rd August 2009 09:54 PM
"BIOSTAR TPOWER I55 - Intel LGA1156" ROCK windwithme Computer System Hardware 2 23rd July 2009 09:04 AM
"Cooling Motherboard Voltage Regulators - The Backside Approach" Article by Nick P. mike11 Computer System Hardware 2 13th March 2009 02:29 PM
Intel Brings Quad SLI with the " Skulltrail " sushrukh Member News 0 24th September 2007 02:31 AM


All times are GMT -7. The time now is 03:33 AM.

Benchmark Reviews Discussion Forum
Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Remove advertisements

Follow Benchmark Reviews on FacebookReceive Tweets from Benchmark Reviews on Twitter