Re: Is my 520 being hacked?

[Rich Loeber <rich@xxxxxxxxx>]

   POP can be used as an easy method for sending email.  At one point, our
   ISP's mail server was having reliability issues, so we switched over to
   send outbound mail through the POP server on our IBM i.  It was so
   reliable that we left it that way.

   Rich Loeber - @richloeber
   Kisco Information Systems
   [1]http://www.kisco.com

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   On 4/2/2013 10:34 AM, DeLong, Eric wrote:

 I know of a few products that use POP to receive email "replies" to automate some processing...  I know Softlanding TurnOver has an email monitor job that may be used (or not) to update help tickets and whatnot...  Or, messaging subsystems that allow emailed replies to console messages...  Otherwise, I've never really seen POP  being used on the platform...

 -Eric DeLong

 -----Original Message-----
 From: [2]midrange-l-bounces@xxxxxxxxxxxx [[3]mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Bob Cagle
 Sent: Monday, April 01, 2013 2:50 PM
 To: Midrange Systems Technical Discussion
 Subject: RE: Is my 520 being hacked?

 You are correct, I am only using SMTP to email reports.

 I was thinking the same thing - why do I even need the POP service?  So,
 I have turned it off.  I'm pretty sure it isn't needed, but I'll find
 out pretty quick if something screams about it.

 Thanks

 Bob Cagle
 IT Manager
 Lynk, Inc.


 Nathan Andelin
 Sent: Monday, April 01, 2013 2:15 PM
 To: Midrange Systems Technical Discussion
 Subject: Re: Is my 520 being hacked?

 Bob,

 I don't think the POP servers are used at all for mail relay. They're

 just used for receiving and storing mail "destined" for your domain.
 Which begs the question, why run the POP service at all? Are you
 providing full-service >email to your IBM i users? Or are you only using
 the IBM i SMTP server to send outgoing email? If so, then don't start
 the POP servers.

 Mail relay restrictions are a SMTP configuration option, and for the

 past 6 years or more, email has been restricted by default for IBM i.

 If you do chose to activate POP, then be prepared for spammers, they

 will try over and over again to send email to your server with random,
 often nonsensical account names.

 -Nathan

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