Go Back   HowtoForge Forums | HowtoForge - Linux Howtos and Tutorials > Linux Forums > Server Operation

Do you like HowtoForge? Please consider supporting us by becoming a subscriber.
Reply
 
Thread Tools Display Modes
  #1  
Old 14th March 2008, 21:16
JimmiJames JimmiJames is offline
Member
 
Join Date: Jun 2006
Posts: 51
Thanks: 4
Thanked 0 Times in 0 Posts
Default Some emails from my mail server is seen as spam

I have a mail server with postfix(no TLS), it's been working for 2 months but recently we've discovered that some ISPs are seeing our emails as spam. When we look at the logs, the emails are sent ok but never actually reach their destinators.

I don't want to get in the specifics but in a general sense, what would be the reasons mail coming from my mail server is seen as spam by some spam filters?
Reply With Quote
Sponsored Links
  #2  
Old 14th March 2008, 23:41
daveb daveb is offline
Senior Member
 
Join Date: Dec 2006
Location: St Louis Mo
Posts: 272
Thanks: 43
Thanked 41 Times in 37 Posts
Default

Dynamic Ip, incorrect Rdns are a couple reasons your servers mail could be seen as spam. You can also check to see if your ip is listed on any blacklist.
http://www.mxtoolbox.com/blacklists.aspx
Reply With Quote
  #3  
Old 15th March 2008, 02:07
JimmiJames JimmiJames is offline
Member
 
Join Date: Jun 2006
Posts: 51
Thanks: 4
Thanked 0 Times in 0 Posts
Default

Look like it might have to with reverse DNS, the PTR record is either incorrect or absent.
Reply With Quote
  #4  
Old 15th March 2008, 15:49
Musty Musty is offline
Member
 
Join Date: Mar 2008
Location: Morocco
Posts: 38
Thanks: 3
Thanked 3 Times in 3 Posts
Default

Quote:
Originally Posted by JimmiJames
Look like it might have to with reverse DNS, the PTR record is either incorrect or absent.
Servers with Dynamic IP are blocked by servers like hotmail. I am experiencing this problem as I have a dynamic IP and I am planning to purchase a static one to get around this.
However, if you have a static IP, then you may need to try this wizard to get info on how to get your mails through to hotmail.

http://www.microsoft.com/mscorp/safe...nderid/wizard/

Hope this helps!
__________________
Computers are like air conditioners, they stop working properly if you open Windows.
Reply With Quote
  #5  
Old 16th March 2008, 10:02
JimmiJames JimmiJames is offline
Member
 
Join Date: Jun 2006
Posts: 51
Thanks: 4
Thanked 0 Times in 0 Posts
 
Default

Quote:
Originally Posted by Musty
Servers with Dynamic IP are blocked by servers like hotmail. I am experiencing this problem as I have a dynamic IP and I am planning to purchase a static one to get around this.
However, if you have a static IP, then you may need to try this wizard to get info on how to get your mails through to hotmail.

http://www.microsoft.com/mscorp/safe...nderid/wizard/

Hope this helps!
Thanks, we have a static IP but the only problems we've had is with the biggest ISP in Quebec and 1 or 2 hosting companies in the US.

I'm pretty sure that if we correct the PTR record everything will be fine...I think
Reply With Quote
Reply

Bookmarks

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

BB 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
Would the problem come from postfix? satimis Server Operation 10 27th January 2008 10:31
Postfix problem: lost connection after CONNECT from unknown fernando_torrez Server Operation 5 30th November 2007 14:17
External mail server with gmail MX service adrenalinic Installation/Configuration 20 24th April 2007 14:49
Moved mail to new server and now rejects emails. rmenzies Installation/Configuration 1 6th February 2007 09:14
postfix-tls sasl2 mysql courier-authmysql gabrix Server Operation 4 12th January 2007 22:09


All times are GMT +2. The time now is 19:49.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.