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Tag Archives: mail server

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  2. Entries tagged with "mail server"

Domain Name System - DNS

dnsenum Returning Odd Characters After Installing Options Perl Modules On Backtrack 5

ErrorsBy alexFebruary 2, 20131 Comment

While working on an upcoming article for QD I ran into an issue with the dnsenum.pl Perl script. I followed the process of installing the optional Perl modules and when I went back to test dnsenum it would no longer return any IP addresses. Instead of dnsenum returning actual IP addresses it was returning odd…

Technology Insights

Change Default Mail Client On OSX To Microsoft Outlook For Mac

InsightsBy alexAugust 8, 20114 Comments

When clicking on hyperlinks that are set to open a compose email message on OSX the Mail.app application will launch. Since it is likely that your preferred email application is something other than Mail.app such as Mozilla Thunderbird, Opera, Microsoft Outlook for Mac, Postbox, Sparrow, or something else then you will want to change the…

Technology Errors

postfix/smtpd[XXXXX]: fatal: unsupported dictionary type: mysql, Postfix maillog Errors

ErrorsBy alexJanuary 11, 20112 Comments

I recently updated a development server running CentOS and ran into various minor issues including one regarding postfix being compiled with MySQL support. The development server runs ISPConfig for various virtual hosts and after upgrading all the packages on the server which included Postfix I noticed errors in the maillog. Below I describe what the…

Technology Insights

Use Telnet To Login To Exim SMTP Server, Perform SMTP Authentication, & Send Email

InsightsBy alexJuly 26, 20101 Comment

If you are a system administrator you probably manage one or more email servers so things eventually will go wrong and need to be resolved as quickly as possible. It is beneficial to know how to troubleshoot email servers using telnet via a shell so you don’t have to rely on a GUI mail client.…

Technology Insights

Stop Duplicate Emails in Sent Items When Syncing Gmail via IMAP Using Outlook 2007

InsightsBy alexMarch 5, 200964 Comments

I wrote a previous post regarding saving messages sent via POP3 accounts into Gmail’s sent items yesterday and it can be read here. To expand on that there is another option to accomplish the same goal which is to set your outgoing mail server as smtp.gmail.com and use your Gmail account settings to authenticate. This…

Technology Insights

Email Hanging or Not Working After Switching Internet Service Provider

InsightsBy alexOctober 29, 2008Leave a comment

After switching your ISP(Internet Service Provider) your email accounts seem to no longer be functioning. Typically this is caused by the outgoing (SMTP) mail server not being accepted from the new Internet providers network. This is normal and one of the main tools that ISP’s use to fight Spam e-mails. They do not allow people…

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