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Re: [Fed-Talk] Firewall email problem



The VA has probably blocked outbound port 25 (smtp) access for anything but the VA mail server. When you receive email you are either using POP or IMAP, which run on a different port, so that's why you can receive. While this is annoying for you, it probably was in response to security direction from above.

One (of many) reasons to block outbound port 25 connections is many viruses that propagate through email don't actually use your mail server to spread. They infect your client machine, and then start sending mail directly from your machine to all the targets they can find. By blocking port 25 these types of viruses can't spread.

If you have a mission requirement to use the upenn.edu account there should be process to get a firewall waiver, however if it is a personal reason you're probably stuck.

On Apr 28, 2006, at 12:35 PM, Buxbaum, Laurence wrote:

I am having trouble sending email through my university server. I am at
the Philly VA and use Mail (the version with OS 10.3.9) to send and
receive mail on my mail.med.upenn.edu account. Until about 3 weeks ago
it was fine. Now I can receive but not send mail. It makes no security
sense. I can send and receive just fine from home so the server is okay.
In the past I used to send mail from the VA smtp server but U. Penn.
Stopped allowing that kind of aliasing.
Any idea what is wrong and why the VA firewall would block sending and
not receiving. I tried Thunderbird to no avail. I can send via Webmail
but that is very clunky and slow. I can send and receive with Outlook
using Citrix but I need access to my university account from the VA.



-----Original Message----- From: fed-talk-bounces+laurence.buxbaum=email@hidden [mailto:fed-talk-bounces+laurence.buxbaum=email@hidden] On Behalf Of email@hidden Sent: Thursday, April 27, 2006 3:04 PM To: email@hidden Subject: Fed-talk Digest, Vol 3, Issue 111

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Today's Topics:

   1. Re: Safest way to run Windows? (Josh Wisenbaker)
   2. three-day Podcasting and Streaming Internet Media Beta	course
      May 3-5 in Austin, TX (Dave Hale)


----------------------------------------------------------------------

Message: 1
Date: Wed, 26 Apr 2006 19:56:09 -0400
From: Josh Wisenbaker <email@hidden>
Subject: Re: [Fed-Talk] Safest way to run Windows?
To: "Pike, Michael (NNMC)" <email@hidden>
Cc: Fedtalk List <email@hidden>
Message-ID: <email@hidden>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed


On Apr 26, 2006, at 2:26 PM, Pike, Michael (NNMC) wrote:

I am really impressed with Parallels speed. It by far is the fastest
virtual machine I have ever seen (don't know if it's their software or
the Core Duo), but it's impressive.

It's helped out by the hardware virtualization (VT extensions) of the CoreDuo.

FWIW, we have a pretty big ESX host that provides very good
performance even with a lot of production VMs on it.

Josh

--
Josh Wisenbaker, ACSA
http://www.afp548.com
Changing the world one server at a time.




------------------------------

Message: 2
Date: Thu, 27 Apr 2006 09:12:35 -0400
From: Dave Hale <email@hidden>
Subject: [Fed-Talk] three-day Podcasting and Streaming Internet Media
	Beta	course May 3-5 in Austin, TX
To: email@hidden
Message-ID: <email@hidden>
Content-Type: text/plain; charset="us-ascii"

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