Information Technology Services

Going Digital with Joey Brenn

Closing Port 25 prevents outbound SPAM

by Joey Brenn | Nov 04, 2013

Information Technology receives alerts from our internet vendor, AT&T, about suspicious activities seen coming from our network.  The latest one concerns a system on our network that has been compromised and is sending out SPAM email messages.  These are not new occurrences but we have gotten quite a few in recent weeks and our efforts to find the machine in question has been fruitless.  The machine appears for a short period of time and then disappears from the network.  It seems to come on to our network during evening times and stays for about an hour or so.  In order to comply with our agreement with AT&T and to be good citizens of the Internet, we have blocked all outbound SMTP Protocol (Port 25) from leaving our network unless it is going through our email servers.  This did not affect our email servers and in no way impacts the flow of normal email.  This move prevents us from getting placed on the SPAM sender databases, causing us an interruption in email flow.  If you have any questions, please send an email to jbrenn@claflin.edu.

392 comments

Leave a comment
  1. Happy New Year 2017 Images, Wishes, Greetings, Quotes & HD Wallpaper | Dec 07, 2016
  2. pinku | Dec 07, 2016
  3. radha | Dec 07, 2016
  4. mina | Dec 07, 2016
  5. mana | Dec 07, 2016
  6. kiya | Dec 07, 2016
  7. ajay | Dec 07, 2016
  8. ajay | Dec 07, 2016
  9. ajay | Dec 07, 2016
  10. ajay | Dec 07, 2016
  11. ajay | Dec 07, 2016
  12. ajay | Dec 07, 2016
  13. Deviel Back | Dec 06, 2016
  14. Alina | Dec 06, 2016
    I love all the post.I really enjoyed to reading this article.I would like more information about this because it is very nice. Thanks for sharing Target Discount Code
  15. Jangkrik | Dec 06, 2016
  16. JSC Exam result | Dec 05, 2016
  17. silvia vero | Dec 04, 2016
  18. hoteldekho | Dec 01, 2016
  19. Timmy | Dec 01, 2016

    Howdy! Do you use Twitter? I’d like to follow you if that wouldbe ok. I’m absolutely enjoying your blog and look forward to new updates.

    latest stablehost coupon

  20. Peter | Dec 01, 2016

    It’s in reality a great and helpful piece of info. I am satisfied that you just shared this useful information with us.Thanks for sharing. 

    godaddy 99 cent domain coupon

  21. visitdr | Nov 29, 2016
  22. HaberOku | Nov 28, 2016
    <a href="http://ekliyo.com/test/universiteden-mezun-olmak-icin-kendini-hazir-hissediyor-musun-5614/">Üniversite Ekliyo</a>
  23. HaberOku | Nov 28, 2016

    <p><a href="http://ekliyo.com/test/universiteden-mezun-olmak-icin-kendini-hazir-hissediyor-musun-5614"></a>Üniversiteden mezuniyet için kendini hazır hissediyor musun ?</p>

    <p><a href="http://ekliyo.com/">Ekliyo</a></p>

  24. zekken | Nov 27, 2016
    Joyeux anniversaire
    Joyeux anniversaire
    Amour image photo
    Amour image photo
    Bonne année 2017
    Bonne année 2017
    images d'amour
    images d'amour
      
  25. MovieBox Apk Download | Nov 27, 2016
  26. Merry Christmas 2016 Cards | Nov 27, 2016
    You have written such an appreciable post Merry Christmas 2016 Cards thank you so much for sharing this information with all of us.
  27. m | Nov 26, 2016
  28. m | Nov 26, 2016
  29. Rina | Nov 25, 2016
    A sweet greet from my country. Ayo kunjungi Jasa SEO top 1 Google.
  30. xiaomi mi6 | Nov 25, 2016
  31. esmeralde | Nov 23, 2016

    1962 yılından beri laboratuvar alanlarında faaliyet gösteren firmamız, size uygun fiyat seçenekleri ile [url="https://goo.gl/1hVZvO"]laboratuvar cam malzemeleri[/url] konusunda uygun fiyat seçenekleri ile en iyi olanı sunmayı hedeflemektedir.

    [url="https://goo.gl/HrLjJ9"]çeker ocak[/url] 

    [url="https://goo.gl/aQwtqP"]mikroskop[/url] 

  32. Aieres | Nov 23, 2016

    1962 yılından beri laboratuvar alanlarında faaliyet gösteren firmamız, size uygun fiyat seçenekleri ile <a href="https://goo.gl/1hVZvO">laboratuvar cam malzemeleri</a> konusunda uygun fiyat seçenekleri ile en iyi olanı sunmayı hedeflemektedir.

    <a href="https://goo.gl/HrLjJ9">çeker ocak</a>

    <a href="https://goo.gl/aQwtqP">mikroskop</a>

  33. ravali | Nov 22, 2016

    Independent Hyderabad Escorts

    hyderabad independent escorts

    Hyderabad Female Escorts

    Chennai Escort

    Chennai Escorts

  34. meena | Nov 22, 2016
    Hyderabad Escort Hyderabad Escorts Independent Hyderbad Escorts Escorts in Hyderabad hyderabad independent escorts Hyderbad Female Escorts Chennai Escort Chennai Escorts
  35. pooja | Nov 22, 2016
  36. Maria | Nov 22, 2016
    <a href="http://www.sahanasofi.com">Chennai Escorts</a>
  37. anasuya | Nov 22, 2016
    [url=https://goo.gl/BjL1e6]Hyderabad Escort[url]
  38. Anupama | Nov 22, 2016
    <a href="https://goo.gl/BjL1e6">Hyderabad Escort</a>
    <a href="https://goo.gl/Bwikl8">Hyderabad Escorts</a>
    <a href="https://goo.gl/DqxMnP">Independent Hyderbad Escorts</a>
    <a href="https://goo.gl/sq9MVa">Escorts in Hyderabad</a>
    <a href="https://goo.gl/yeIcnA">hyderabad independent escorts</a>
    <a href="https://goo.gl/DPN5To">Hyderbad Female Escorts</a>
    <a href="https://goo.gl/M6cpSK">Chennai Escort</a>
    <a href="https://goo.gl/zdQB0l">Chennai Escorts</a>
  39. Diya Gupta | Nov 21, 2016
    Hi friends now you can online order for fix your dating with Live Bangalore escorts services girl agency, it’s a great offer for everyone fulfillment your physical satisfaction.   Bangalore Escorts Service   Bangalore Escorts Service   Bangalore Escorts Service   Bangalore Escorts Service   Bangalore Escorts Service
  40. Reviews | Nov 20, 2016

    The Period Friendly Menstrual Cup Canada, USA People - Buy Menstrual cups

     
    Menstrual Cup Canada is Here!

    Menstrual Cup Canada, Just Works!

    Menstrual Cups UVIC

    Period Cups. Be Ready

    Period Cup - Simply Awesome! Menstrual Cups

    Menstrual Cups Canada

    Menstrual cup vs. tampon

    Buy Menstrual Cups - Snap Into It!

    Every Women Requires Menstrual Cups. Heres Why.

    Menstrual cups are perfect for me

    Menstrual Cup UK

    Buy Menstrual Cup USA

    Where Can You Buy Menstrual Cups - UK?

    Should i buy a menstrual cup

    Choose menstrual cup

    menstrual cup canada

    Menstrual cup Canada - What is available?

    Buy Menstrual Cup USA

    Womens's Menstrual Cup

    Think Better, period cups.
    cups for period blood
    Wear - menstrual cups and reusable cloth pads
    Menstrual Cup Cups Mooncup Meluna Lunette Instead Diva
    Menstrual Cup | Period Cup | Sizes A and B - Boots
    The Best Menstrual Cups (Period Cups) - Reviews & Comparison UK
    mooncups uk
    does the diva cup work
    Where to buy menstrual cups in Canada
    What Menstrual Cup Is Right For You? 
    Where to Buy Menstrual Cups in the USA
    Buy Menstrual Cups and accessories online
    Where can you buy menstrual cups? 
    How to Buy a Menstrual Cup: 6 Steps (with Pictures)
    17 Best Menstrual Cups (Period Cups) - Reviews & Comparison
    Best menstrual cup for you: The definitive guide
    Menstrual Cups Canada- Where to Buy
    How To Use A Menstrual Cup
    Menstrual cups - a Usa buying guide 

    Menstrual Cups UK

    Menstrual Cup


    Why buy menstrual cups

    Everything To Love - Menstrual Cups

    Jenny Menstrual Cups

    Menstrual Cups Reviews

    Buy Menstrual Cups Online

    Menstrual Cup USA

    Tags Related To Period Cups
    The cup Period blood
    Walmart period cup
     Let me try period cups
    Period cup dangers
    Period cup where to buy
    Period cup reviews
    Period cup uk
    Period cup comparison
    best period cup
    lunette menstrual cup
    Period cup amazon
    luna period cups
    diva cup
    moon cup
    let me use a menstrual cup
  41. Escorte | Nov 20, 2016
    Pe acest site escorte de lux si damele de companie de inalta clasa sunt la ordinea zilei. Listam doar dame de lux atent verificate, pentru ca cei care apeleaza la aceste escorte de lux sa fie pe deplin satisfacuti. Aici vei gasi escorte cu adevarat frumoase, de lux, femei senzuale cu un rafinament deosebit. Alege escorta, contacteaz-o, explica-i la telefon ce pretentii si ce asteptari ai de la ea, dupa care stabileste o intalnire cu ea. Pe oricare dintre escortele de lux de pe site o vei alege, te va face sa te simti bine si nu vei regreta timpul petrecut cu ea. http://goo.gl/I2U6aY
  42. Wilson Larrie | Nov 19, 2016
    Awesome work you have done here, I am very happy to read this nice post. You are a great writer and give us much information. Assignment Help
  43. BandarAsia99 | Nov 19, 2016
  44. sohail | Nov 19, 2016
    It is a smart presentation with a unique way of writing and written in well mannered techniques. Matlab Homework Help
  45. Canada | Nov 18, 2016

    The Period Cup Canada, USA Specialists - Buy Menstrual cups

     
    Period Cup - Simply Awesome! Menstrual Cups

    Menstrual Cups Canada

    Menstrual cup vs. tampon

    Buy Menstrual Cups - Snap Into It!

    Every Women Requires Menstrual Cups. Heres Why.

    Menstrual cups are perfect for me

    Menstrual Cup UK

    Buy Menstrual Cup USA

    Where Can You Buy Menstrual Cups - UK?

    Should i buy a menstrual cup

    Choose menstrual cup

    menstrual cup canada

    Menstrual cup Canada - What is available?

    Buy Menstrual Cup USA

    Womens's Menstrual Cup

    cups for period blood
    Wear - menstrual cups and reusable cloth pads
    Menstrual Cup Cups Mooncup Meluna Lunette Instead Diva
    Menstrual Cup | Period Cup | Sizes A and B - Boots
    The Best Menstrual Cups (Period Cups) - Reviews & Comparison UK
    mooncups uk
    does the diva cup work
    Where to buy menstrual cups
    What Menstrual Cup Is Right For You? 
    Where to Buy Menstrual Cups in the USA
    Buy Menstrual Cups and accessories online
    Where can you buy menstrual cups? 
    How to Buy a Menstrual Cup: 6 Steps (with Pictures)
    7 Best Menstrual Cups (Period Cups) - Reviews & Comparison
    Best menstrual cup for you: The definitive guide
    Menstrual Cups Canada- Where to Buy
    How To Use A Menstrual Cup
    Menstrual cups - a Usa buying guide 

    Menstrual Cups UK

    Menstrual Cup


    Why buy menstrual cups

    Everything To Love - Menstrual Cups

    Jenny Menstrual Cups

    Menstrual Cups Reviews

    Buy Menstrual Cups Online

    Menstrual Cup USA

    Tags Related To Period Cups
    The cup Period blood
    Walmart period cup
     Let me try period cups
    Period cup dangers
    Period cup where to buy
    Period cup reviews
    Period cup uk
    Period cup comparison
    best period cup
    lunette menstrual cup
    Period cup amazon
    luna period cups
    diva cup
    moon cup
    let me use a menstrual cup
  46. nadiya khan | Nov 18, 2016
  47. alicealbert | Nov 18, 2016
    This is really great work. Thank you for sharing such a useful information here in the blog. SAS Assignment Help Online
  48. Alison | Nov 18, 2016
    I like your working style. Your blog is so interesting and nice. You have done superb job. Thanks for sharing.  Do My Programming Assignment
  49. rianda mimi | Nov 17, 2016
  50. Terry Bogard | Nov 17, 2016
    Awesome work you have done here, I am very happy to read this nice post. You are a great writer and give us much information. C Homework Help

    Leave a comment