POP3 event IDs 1019, 1023 and 1036

Working on a client's server (I inherited this job from prior
consultant) and I see these three event IDs which I do not know how to
stop from popping up.

The users are still getting their mail, yet every 15 minutes (the
frequency that that the mail gets pulled down) I get about 20 of these
messages,

So far I have changed the host record with the IP address of their
ISP's mail server and added an A record to point to that as well, yet
these still persist. I have rebooted after doing this but still no
luck.

This server is behind a firewall which is shared with another small
business' network (which I do not manage nor have access to the
firewall or its logs). I am trying to help as much as possible but all
I have access to is that server.

What should I look at next? This is a recent trend as these warnings
have only started a week ago, as far as I can tell.
.

Relevant Pages

  • Re: CEICW fails at firewall config
    ... Do you or do you not have ISA 2000 or ISA 2004 installed on the SBS server? ... Do you have 2 NICs in the SBS? ... CEICW fails on firewall configuration every time. ... >>> Call to Creating the protected networks access rule returned ok. ...
    (microsoft.public.windows.server.sbs)
  • Re: Recycler security issues on IIS server
    ... > latest upates to the server. ... > like to see the server put behind our firewall, ... other software, install all patches, IISlockdown, URLscan, use the correct ... the procedures you follow may vary depending on your security needs. ...
    (microsoft.public.inetserver.iis.security)
  • Re: ISA SERVER NOT STARTING
    ... I delete the nat/basic firewall and stop and started the RRAS an tried to ... There were no critical events in the DNS Server Log in the last 24 hours. ... An error occurred during logon ... Caller User Name: - ...
    (microsoft.public.windows.server.sbs)
  • Re: For Microsoft Partners and Customers Who Cant Download or Access
    ... to reconfigure the firewall, but to use a static IP on your client ... and to make sure that the DNS server entries on the client are ... Microsoft for msdn2.microsoft.com. ... use a static IP and set the DNS server addresses to the DNS ...
    (microsoft.public.dotnet.general)
  • Re: login attempts
    ... > Every day i have on my win2000 iternet server a lots of wrong login ... Windows by default allows ... You also need a firewall. ... the internet, except for those ports you know you're using. ...
    (microsoft.public.win2000.security)
Loading