Below is a list of internet server addresses.

• E-mail:

  Incoming mail server:

  for the POP3 protocol: poczta.hti.pl — we recommend securing the connection using STARTTLS on the TCP port number 110, in the case of older applications the server also supports SSL tunneling on the TCP port number 995

  for IMAP4 protocol: poczta.hti.pl — we recommend securing a STARTTLS connection on TCP port 143, in case of older applications the server also supports SSL tunneling on TCP port number 993

  Outgoing mail server:

  for SMTP protocol: poczta.hti.pl — we recommend securing connection using STARTTLS on TCP port number 587. The server also supports SSL tunneling on TCP port number 587.
  Connections not secured on TCP port number 25 are no longer supported due to security reasons.

  The outgoing e-mail server requires authorization — an example of the authorization configuration is available on the technical support page at https://www.horyzont.net/en/pomoc/konfiguracja_poczty/

  Access to e-mail through the website — https://poczta.hti.pl/mail
  The mail management panel is available at https://poczta.hti.pl/iredadmin
  

• DNS service servers

  DNS resolvers — dns servers used to solve domains for clients of our network:
  217.168.128.20
  217.168.128.120

  Note: Access to these servers is limited only to clients of our network.
  

• DNS zone servers — for domain registration

  Primary DNS: dns0.hti.pl IP: 217.168.128.21
  Secondary DNS: dns1.hti.pl IP: 217.168.128.121
  Sql database servers
  

• MySQL 5 database server

  Address: mysql5.hti.pl Port: 3306
  

• PostgreSql database server

  Address: postgresql.hti.pl Port: 5432
  

• An ftp server for the purposes of content management of websites

  An ftp server for web content upload:
  ftp://virt-ftp.hti.pl