Archive for July, 2010
30
Jul
Posted by Douglas in Linux, Open Source Software. Tagged: email, Linux, open source software, postfix, rate limiting. Leave a Comment
Since I had to figure out how to limit outbound traffic by domain today I thought I would post the procedure for everyone to enjoy. Listed below are the configuration changes that I made to our main postfix gateway server. Add the following lines to /etc/postfix/master.cf. You could also copy the smtp line and rename [...]
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30
Jul
Posted by Douglas in Internet, Security. Tagged: email, policies, rate limiting, roadrunner, Security, spam. Leave a Comment
I have noticed over the last few days that we have had Roadrunner messages in our main e-mail gateway stuck in our queue with the following error: 56FE71501A1C 1695 Fri Jul 30 08:32:19 noreply@nowhere.com (host hrndva-smtpin02.mail.rr.com[71.74.56.244] refused to talk to me: 421 4.7.1 – Connection refused – - Too many concurrent connections from source IP) [...]
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29
Jul
Posted by Douglas in Linux, Open Source Software. Tagged: mailman, open source software, permissions, Security. Leave a Comment
I have been spending a good deal of time in our mailing list server archives trying to run down several permissions related problems. After doing a great deal of searching online I realized that there was no place online that listed the comprehensive required permissions for the /var/lib/mailman/archives and /var/lib/mailman/lists folders. I spent a few [...]
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26
Jul
Posted by Douglas in Linux, Open Source Software. Tagged: email, Linux, mailing lists, mailman, open source, permissions. Leave a Comment
I have been battling a weird archives issue with our GNU Mailman mailing list server. We have some lists that archive properly when e-mail is sent to them. We have other lists where the e-mail is delivered but does not show up in the archives. We also have lists where e-mail sent to them disappears [...]
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22
Jul
Posted by Douglas in Hardware, Telecommunications. Tagged: AT&T, mobile phones, sprint, Telecommunications, verizon. Leave a Comment
Cell phone coverage in our new building has proven to be quite a challenge. It would appear that big steel buildings such as ours do not permit easy wireless transmission. I have noticed issues with sending 802.11 G and N signals as well the signals that make our phones work. The overhead wireless network was [...]
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22
Jul
Posted by Douglas in Church, Internet, Social Networks. Tagged: blog, faith, Internet, social networks, Technology, Websites. Leave a Comment
I submitted my first article for our new Faith & Technology blog today. We are starting this up as a collaborative effort between several clergy and lay people around our Conference. Its purpose is to discuss technology and the various ways in which it impacts faith and our local church community. This is my first [...]
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15
Jul
Posted by Douglas in Internet. Tagged: browsing, google, https, Internet, protocol, Security, web. Leave a Comment
As I was navigating the internet today at work I noticed a new Google feature that seems rather interesting: Google has released the beta version of their https encrypted search website. Google probably didn’t encrypt their searches from the beginning due to the increased overhead of the https protocol. After several test searches I cannot [...]
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7
Jul
Posted by Douglas in Internet, Linux, Open Source Software. Tagged: email, gnu, Internet, Linux, mailman, open source. Leave a Comment
The Conference mailing list server is down again. I’ve been monitoring disk utilization on the list server for awhile now in an attempt to keep the server up until after the building move. Once I realized that we were going to run out of space again I decided to take the server down preemptively. We [...]
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