Comments on: Has your school mailserver been blacklisted? http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/ Wed, 07 Jan 2009 18:37:12 +0000 http://wordpress.org/?v=2.7 hourly 1 By: Wesley Fryer http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/comment-page-1/#comment-41953 Wesley Fryer Sat, 20 Oct 2007 19:18:19 +0000 http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/#comment-41953 I don't have any control over any blacklists, sorry. I don’t have any control over any blacklists, sorry.

]]> By: gregory http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/comment-page-1/#comment-41945 gregory Sat, 20 Oct 2007 07:35:26 +0000 http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/#comment-41945 please remove our ip from yahoo blacklist. please remove our ip from yahoo blacklist.

]]> By: Brian B. http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/comment-page-1/#comment-39485 Brian B. Fri, 10 Aug 2007 03:16:14 +0000 http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/#comment-39485 My school's mail server got blacklisted by two different spam protection sources. We watched our outgoing traffic via live firewall logs and found the internal IP address of the spam generator and viola - 4 trojans on a laptop. It was a busy boy sending spam from our external IP address. /begin sarcasm Cheers to whoever wrote those trojans - I surely didn't have enough to do. /end sarcasm My school’s mail server got blacklisted by two different spam protection sources. We watched our outgoing traffic via live firewall logs and found the internal IP address of the spam generator and viola - 4 trojans on a laptop. It was a busy boy sending spam from our external IP address.

/begin sarcasm

Cheers to whoever wrote those trojans - I surely didn’t have enough to do.

/end sarcasm

]]> By: Mathew http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/comment-page-1/#comment-39442 Mathew Thu, 09 Aug 2007 02:03:45 +0000 http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/#comment-39442 I feel for Stephanie. My web site has a mailing list. It's not spam because people sign up for it (and of course it's educational in nature). But because it is bulk mail, some spam filters consider it spam. Spam Barracuda blocks me whenver I include my signature. I take heart in the fact that Discovery Educator's newsletter ends up in my google junk mail folder more often than not...so I'm in good company. I feel for Stephanie. My web site has a mailing list. It’s not spam because people sign up for it (and of course it’s educational in nature). But because it is bulk mail, some spam filters consider it spam. Spam Barracuda blocks me whenver I include my signature. I take heart in the fact that Discovery Educator’s newsletter ends up in my google junk mail folder more often than not…so I’m in good company.

]]> By: Stephanie Sandifer http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/comment-page-1/#comment-39440 Stephanie Sandifer Thu, 09 Aug 2007 00:36:04 +0000 http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/#comment-39440 Wesley -- I recently experienced a similar issue with blacklisting of my server IP address from the server that hosts all of my websites. I have some email accounts associated with some of the websites and the main email account was "spoofed" and/or hacked and used for spam which resulted in the IP address being blacklisted. don't ask me how "spoofing" works -- I have no clue other than it basically means that a spammer or phisher can send emails that appear to originate from your domain. A hacked account can occur if there are any "holes" in any of the websites (or their backends) that you use for your websites. Here is the important point about this that I learned from my experience. If an IP address is blacklisted by Yahoo!, not only will you not be able to email Yahoo.com email addresses, but yahoo.com email addresses will also not be able to email any address at the domains associated at the blacklisted IP address. I tested this using my domains and a personal yahoo.com email address that I use infrequently. I was unable to send any emails from my yahoo.com address to any email account associated with any of my hosted domains. My understanding is that the only solution is for the network admin to contact Yahoo! and appeal to them to remove the IP from their blacklist (which they are reluctant to do once an IP has been identified as being associated with spam). Fortunately I don't use an email account associated with the domain for my blog, but it has affected my ability to communicate with a small alumni group for my alma mater. :( Thanks for posting this information as it is very important info for anyone involved with server, website, or email administration. Stephanie Wesley —

I recently experienced a similar issue with blacklisting of my server IP address from the server that hosts all of my websites. I have some email accounts associated with some of the websites and the main email account was “spoofed” and/or hacked and used for spam which resulted in the IP address being blacklisted. don’t ask me how “spoofing” works — I have no clue other than it basically means that a spammer or phisher can send emails that appear to originate from your domain. A hacked account can occur if there are any “holes” in any of the websites (or their backends) that you use for your websites.

Here is the important point about this that I learned from my experience. If an IP address is blacklisted by Yahoo!, not only will you not be able to email Yahoo.com email addresses, but yahoo.com email addresses will also not be able to email any address at the domains associated at the blacklisted IP address.

I tested this using my domains and a personal yahoo.com email address that I use infrequently. I was unable to send any emails from my yahoo.com address to any email account associated with any of my hosted domains. My understanding is that the only solution is for the network admin to contact Yahoo! and appeal to them to remove the IP from their blacklist (which they are reluctant to do once an IP has been identified as being associated with spam).

Fortunately I don’t use an email account associated with the domain for my blog, but it has affected my ability to communicate with a small alumni group for my alma mater. :(

Thanks for posting this information as it is very important info for anyone involved with server, website, or email administration.

Stephanie

]]> By: Identity 2.0 » Blog Archive » Has your school mailserver been blacklisted? http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/comment-page-1/#comment-39437 Identity 2.0 » Blog Archive » Has your school mailserver been blacklisted? Wed, 08 Aug 2007 23:13:35 +0000 http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/#comment-39437 [...] Has your school mailserver been blacklisted? Identity [...] [...] Has your school mailserver been blacklisted? Identity [...]

]]> By: Wesley Fryer http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/comment-page-1/#comment-39435 Wesley Fryer Wed, 08 Aug 2007 22:06:23 +0000 http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/#comment-39435 I am not sure why you would need to-- if you are running your own mail server you would have a static IP address-- some ISPs block outgoing mail through SMTP servers that are NOT their own, I know Cox does this here in the midwestern U.S. I don't think a dynamic residential IP address would be whitelisted. The same website will show you your "outside" dyanamic IP address, however, so you could give it a try. I am not sure why you would need to– if you are running your own mail server you would have a static IP address– some ISPs block outgoing mail through SMTP servers that are NOT their own, I know Cox does this here in the midwestern U.S. I don’t think a dynamic residential IP address would be whitelisted. The same website will show you your “outside” dyanamic IP address, however, so you could give it a try.

]]> By: Mathew http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/comment-page-1/#comment-39433 Mathew Wed, 08 Aug 2007 21:31:55 +0000 http://www.speedofcreativity.org/2007/08/08/has-your-school-mailserver-been-blacklisted/#comment-39433 Do you know how to look up your home account if you have a dynamic IP address? Do you know how to look up your home account if you have a dynamic IP address?

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