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  • How is incoming SMTP mail being delivered despite blocked port

    - by Josh
    I setup a MX mail server, everything works despite port 25 being blocked, I'm stumped as to why I am able to receive email with this setup, and what the consequences might be if I leave it this way. Here are the details: Connections to SMTP over port 25 and 587 both reliably connect over my local network. Connections to SMTP over port 25 are blocked from external IPs (the ISP is blocking the port). Connections to Submission SMTP over port 587 from external IPs are reliable. Emails sent from gmail, yahoo, and a few other addresses all are being delivered. I haven't found an email provider that fails to deliver mail to my MX. So, with port 25 blocked, I am assuming other MTA servers fallback to port 587, otherwise I can't imagine how the mail is received. I know port 25 shouldn't be blocked, but so far it works. Are there mail servers that this will not work with? Where can I find more about how this is working? -- edit More technical detail, to validate that I'm not missing something silly. Obviously in the transcript below I've replaced my actual domain with example.com. # DNS MX record points to the A record. $ dig example.com MX +short 1 example.com $ dig example.com A +short <Public IP address> # From a public server (not my ISP hosting the mail server) # We see port 25 is blocked, but port 587 is open $ telnet example.com 25 Trying <public ip>... telnet: Unable to connect to remote host: Connection refused # Let's try openssl $ openssl s_client -starttls smtp -crlf -connect example.com:25 connect: Connection refused connect:errno=111 # Again from a public server, we see port 587 is open $ telnet example.com 587 Trying <public ip>... Connected to example.com. Escape character is '^]'. 220 example.com ESMTP Postfix ehlo example.com 250-example.com 250-PIPELINING 250-SIZE 10485760 250-VRFY 250-ETRN 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250-DSN 250-BINARYMIME 250 CHUNKING quit 221 2.0.0 Bye Connection closed by foreign host. Here is a portion from the mail log when receiving a message from gmail: postfix/postscreen[93152]: CONNECT from [209.85.128.49]:48953 to [192.168.0.10]:25 postfix/postscreen[93152]: PASS NEW [209.85.128.49]:48953 postfix/smtpd[93160]: connect from mail-qe0-f49.google.com[209.85.128.49] postfix/smtpd[93160]: 7A8C31C1AA99: client=mail-qe0-f49.google.com[209.85.128.49] The log shows that a connection was made to the local IP on port 25 (I'm not doing any port mapping, so it is port 25 on the public IP too). Seeing this leads me to hypothesize that the ISP block on port 25 only occurs when a connection is made from an IP address that is not known to be a mail server. Any other theories?

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  • What are some fast methods for navigating to frequently used folders in Windows 7?

    - by fostandy
    (This is a followup question from my previous question.) In windows XP I used to be able to quickly navigate to frequently used folders by making use of the 'Favorites' menu item and the hotkey behaviour. In certain conditions it could be set up so that getting to a particular folder was as easy as alt-a x (and without a file explorer window open it was as fast as win-e alt-a x). I am struggling to get anywhere near this speed in Windows 7 and would like to solicit advice from others regarding fast folder navigation to see if I am missing any methods. My current way to navigate quickly is basically move hand to mouse move cursor to navigation pane/pain. scroll all the way to the top (because normally I the panel is focused on whatever deep directory structure I am already in). sift through my 50+ favorites to get the one I want, or click a link to a folder that contains further links in some sort of 'pseudo-tree' functionality. select it. This is slower than my previous method by upwards of an order of magnitude. There are a couple of things I've contemplated: add expandable folders, not just direct links, to the favorites menu. add expandable folders, not just direct links, to the start menu. add links of my favorite folders to a submenu of the start menu so that they come up when I search them. They do but this still rather cumbersome started using 7stacks - url here (I cannot link the url directly due to lack of reputation but http://www.alastria.com/index.php?p=software-7s). This is about the closest I've gotten to some sort of compact, customizeable, easy to access, tree based navigation structure. How do you power users quickly navigate to your favorite folders? Are there keyboard shortcuts I am missing? Can someone recommend other apps or addon or extensions that can achieve this sort of functionality? The Current solution (thanks to the answers below) I am going to use is a combination of Autohotkey and 7stacks - autohotkey to launch 7stacks, 7stacks with the 'menu' stack type for fast, key-enabled navigation to folders organised in a tree structure. This solves about 90% of the issue, the only issues are (note that these are really minor, I am really splitting hairs more than anything here) Can't use this for existing folder navigation (ie already have a explorer window open, want to go to another directory) A bit more cumbersome to add/remove entries to compared to xp favorites. A little slower than xp favorites. Whatever. I'm happy. Thanks guys. I think the answer is a split to John T and Kelbizzle - I've elected to give the answer to John T and +1 to Kelbizzle as I had already mentioned 7stacks.

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  • Migrating Outlook data with oracle connector for outlook

    - by amir shadaab
    I have a system which uses Oracle connector for MS outlook 2007. I recently bought a new system and I want to transfer al my email(the one that uses oracle connector) to another system with all the same settings. I know that during a normal transfer, I just need to transfer the .pst file and open it in another system. But I'm not sure how to go ahead with Oracle connector servers. Please help me out with this one.

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  • two Ubuntu 12.04, 1x Netgear router

    - by RussellHarrower
    Ok, so I have 192.168.x.14 with port 80 open and I have set the netgear router to point there then I have 192.168.x.12 with apache running but when I try to connect using chrome to the website hosted on .12 it cant find it, how do I set up .14 to also check .12 /nagios is running on .12 while /munin is running on .14 Thank you for helping I know about Squid, but I don't know what to do? Do I use that or something else.

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  • Speech to text software (audio transcribing) for mac

    - by GiH
    What is the best speech to text software for mac? I have an hours worth of audio that I need to transcribe, and I'd really like to not have to do it manually :-). I prefer free options and I like open source so if there is a project I'd like to know. All answers are welcome though.

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  • Software to aid using camera as a scanner

    - by xxzoid
    I want to digitize some index cards with my camera. I'm looking for a program that would automatically fix geometry on the shots (as you would expect the cards come tilted on the picture). I have an app (droid scan lite) on my android phone that does exactly that, but I would prefer to do it on my pc (the phone camera has poor quality and it's slow and focuses badly while I have a decent slr). If the program is open source it's an advantage, cross platform -- even more so.

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  • Scheduled automatic FTP website backup solution?

    - by Mitch
    Hi, I was wondering if there was a way to schedule automatic FTP site backup with any free or open-source software? Clients like FileZilla do not have an automatic backup (ftp download) option. Is there a way to schedule this with any program, by using the windows task scheduler? Or maybe we need to use a macro program like imacro in combination with FireFTP to do the job? Do you think using macro is a feasible and secure(reliable) solution?

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  • how to extract rar format file on Mac?

    - by George2
    I am using a MacBook Pro running Mac OS X 10.5. I am new to this development environment, and previously worked on Windows. I am wondering how to extract rar compressed format file on Mac? Better free or open source software. Thanks in advance.

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  • How can I create a short cut to a directory on a Windows Phone device?

    - by Mokilok
    When I plug in my Windows mobile it appears in My Computer as a portable device but the data I need regular access to is many sub directories in. Is it possible to create a shortcut or access a path on a mobile device directly? When I open the properties of the folder I want it says the location starts with "Computer\Name of Phone\Phone\". The problem is using that as a path to navigate straight to the files doesn't work. Thanks for your help.

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  • How to display all disk partitions on desktop

    - by sagar
    Let's come to the point directly. Open Finder. Go to view menu - Show toolbar ( if it is hidden in your finder ) on the left top side you can see List of devices I have three disks over there. I want to add all those disk partitions on my desktop. Don't know how? Any one can guide ? Thanks in advance for sharing your knowledge. Sagar.

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  • Can IIS7 execute php files?

    - by Roman
    I have IIS7 on my computer. It can display html files. But if I put a PHP program in the corresponding folder and then try to open it with the Chrome browser I do not see the expected page. Instead Chrome "downloads" this file. Is it beacuse IIS7 cannot display the PHP files?

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  • Why does winamp now play video very fast without sound in vidamp?

    - by gr33d
    Whenever I open a video in Winamp now, it loads in a new winamp-plugin-looking-window titled, "Vidamp", it plays very quickly (about 1 hour plays in 30 seconds) and without sound. I can't figure out how to disable this Vidamp plug-in if that's even what it is. Could this have anything to do with VLC Media Player? When I play a video in VLC, for some reason I can control the volume using Winamp in the background?!? Thanks in advance

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  • How to save rotated Adobe pdf file?

    - by WilliamKF
    I received an Adobe pdf scan of a document that displays upside-down. I rotated it inside Adobe Acrobat and choose Save-As to make a new document, however, the rotation is not saved and when I open the new document, it is upside-down again. How can I correct this upside-down document as a new pdf file?

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  • Surfing the internet while downloading becomes painful

    - by Mehper C. Palavuzlar
    When I try to surf the internet while downloading files (http based, torrent etc.), it becomes painful to open web pages since download traffic is mostly allocated for downloads. Is there a program that can manage this process so that when I surf the weight will be given to internet browser, and when the browser is idle, the weight will be on the download side? I'm using Firefox 3.6.2 on Win7, so any good Firefox addons or Windows based freewares are acceptable.

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  • Setup of SQLServer 2008 want to reboot

    - by Ice
    I want to setup a sqlserver 2008 developeredition on my windows-vista notebook but the setup-check want me to reboot first. But this doesn't help after reboot the setup want a reboot again. I got the tip: You can open Regedit, and modify this key"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet?\Control\Session Manager" and delete any value in "PendingFileRenameOperations?" That works for one try, later i have the same strange entries in this particular registry-Key. What could reenter this values?

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  • Unable to build Python modules in Mandriva 2010

    - by SteveJ
    I am trying to build a Python module (pyfits) but I get the following error: # python setup.py install /home/steve/src/pyfits-2.2.2/stsci_distutils_hack.py:239: DeprecationWarning: os.popen3 is deprecated. Use the subprocess module. (sin, sout, serr) = os.popen3(cmd) running install error: invalid Python installation: unable to open /usr/lib64/python2.6/config/Makefile (No such file or directory) I get the same error when I try and build other modules so my guess is I am missing a Python development library. I am running Mandriva 2010.0, any suggestions?

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  • Turning down the sound on a switched off user

    - by soandos
    If one switches users (i.e. user one switches off, and then another users logs in) and there is sound playing on the first user, that sound will continue to play for the second user. If the second user has admin rights, they can guess what program is causing the sound and then kill it, but that is very clumsy, and far more than what "needs" to be done. When I open the mixer, it just shows that sound is playing. How can I stop it?

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  • Excel: Edit the XML inside an XLSX file

    - by Andomar
    An Excel XLSX file is a zip archive containing several XML files. I tried to extract all the XML files, and edit xl\connections.xml using an XML editor. That's because I have to change 20+ connections to point to a different server. When I open the edited archive in Excel, it refuses the changes and repairs the file. Is there a way to edit the XML files inside an XML archive?

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  • How to backup millions of small files?

    - by grassbl8d
    What is the best way to backup millions of small files in a very small time period? We have less than 5 hours to backup a file system which contains around 60 million files which are mostly small files. We have tried several solutions such as richcopy, 7z, rsync and all of them seems to have a hard time. We are looking for the most optimal way... We are open to putting the file in an archive first or transferring the file to another location via network or hard disk transfer thanks

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  • Manage utorrent webui with a desktop app

    - by thegreyspot
    Hi! Is there a desktop application that lets you connect to a utorrent server? It would be nice to manage my torrents away from my browser. Also it would be nice to just open a .torrent file and make it upload the file to the server and start downloading. I tried to do some google searches but all it displays is how to setup webui... Thanks!

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