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cstactical
 Post subject: Email Bounceback
PostPosted: Mon Jan 03, 2011 7:11 pm 
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Newbie

Joined: Mon Jan 03, 2011 7:07 pm
Posts: 2
Website: http://www.cstactical.com
We currently have trouble sending out email. Called Linode and they said there was no problem on their end. We get the following message when the email bounce back:

Quote:
Your message did not reach some or all of the intended recipients.



Subject: RE: **********

Sent: 1/3/2011 2:11 PM



The following recipient(s) could not be reached:



********** on 1/3/2011 2:11 PM

There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.

<mail.cscad.com #5.5.0 smtp;550-5.7.1 [173.14.78.241 7] Our system has detected that this message is likely>


FYI We are not programmers and we currently do not have one (been burned time and time again). If you have any suggestions, please keep it as beginner level as possible. Thanks!

Mason @ CST
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iml
 Post subject:
PostPosted: Mon Jan 03, 2011 7:38 pm 
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Senior Member

Joined: Fri Dec 10, 2010 6:45 pm
Posts: 63
Normally you would start in the postfix log but my beginner suggestion would be to use hosted smtp like gmail. Email is complicated, especially if you have no programmers or sysadmins.
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Stever
 Post subject: Re: Email Bounceback
PostPosted: Mon Jan 03, 2011 8:20 pm 
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Joined: Fri Dec 07, 2007 1:37 am
Posts: 385
Location: NC, USA
Quote:
<mail.cscad.com #5.5.0 smtp;550-5.7.1 [173.14.78.241 7] Our system has detected that this message is likely>


The receiving server thinks your message is spam. There are lots of possible reasons why this happens, but the reality is that if you run your own mailserver things like this will come up on a near-constant basis and there is often nothing you can do about it.

If you want to roll up your sleeves and start learning, you are in the right place. If you'd rather just click "send" and let the email fairy handle it from there, then gmail et al. are your new best friends.
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cstactical
 Post subject: Re: Email Bounceback
PostPosted: Mon Jan 03, 2011 8:39 pm 
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Newbie

Joined: Mon Jan 03, 2011 7:07 pm
Posts: 2
Website: http://www.cstactical.com
Stever wrote:
If you want to roll up your sleeves and start learning, you are in the right place. If you'd rather just click "send" and let the email fairy handle it from there, then gmail et al. are your new best friends.


Sleeves rolled up...
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Stever
 Post subject:
PostPosted: Mon Jan 03, 2011 10:43 pm 
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Senior Member

Joined: Fri Dec 07, 2007 1:37 am
Posts: 385
Location: NC, USA
First things to check:

1) Is your IP address on any public blacklists?

2) Do you have matching forward and reverse DNS set for your IP?

Code:
 $ host mail.example.com
mail.example.com has address 1.2.3.4
 $ host 1.2.3.4
4.3.2.1.in-addr.arpa domain name pointer mail.example.com.


3) Does your mailserver announce itself (HELO) as the same hostname given by step 2?

Code:
 $ telnet mail.example.com 25
Trying 1.2.3.4...
Connected to mail.example.com.
Escape character is '^]'.
220 mail.example.com ESMTP Postfix


4) Is your email advertising Rolex watches or herbal enhancements of any kind? ;)
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obs
 Post subject:
PostPosted: Mon Jan 03, 2011 11:06 pm 
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Senior Member

Joined: Sun Mar 07, 2010 7:47 pm
Posts: 1970
Website: http://www.rwky.net
Location: Earth
Whats your server ip address, and the domain you're sending from?

_________________
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How to ask for help
1. Give details of your problem
2. Post any errors
3. Post relevant logs.
4. Don't hide details i.e. your domain, it just makes things harder
5. Be polite or you'll be eaten by a grue
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