Kerio Connect - Administrators Guide - Kerio Software Archive

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Protecting SMTP the server in Kerio ConnectHow to configure security options of the SMTP serverIn Kerio Connect, you can configure several limits for IP addresses. This can be done in theadministration interface in section Configuration → SMTP Server → tab Security OptionsFor a single IP address, you can set:• Maximum number of messages sent in one hour — any new message sent from the IPaddress where the limit was exceeded in the recent our is discarded• Max. number of concurrent connections — protection from so-called DoS attackswhich overloads the server• Maximum number of unknown recipients — protection from so-called directoryharvest attacks when an application connects to your server and uses dictionary togenerate possible usernamesFigure 2SMTP serverSelect a group of trusted IP addresses which will not be affected by these settings.With the following additional options you can:• Block messages if the sender’s domain does not have a DNS record (or revers DNSentry) — protection from senders with fictional email addresses• Require authentication even when sender is from a local domain — ensures theauthenticity of anyone sending from a local domain• Set maximum number of recipients per message — protects from spam messages setto a large number of recipients• Maximum number of failed commands in SMTP session — spam is often sent byspecial applications that connect to SMTP servers and ignore its error reports. Kerio94
26.4 How to send outgoing messages through another serverConnect will close the SMTP connection automatically after the defined number offailed commands is reached.Figure 3SMTP serverHow to send outgoing messages through another serverIn Kerio Connect, messages can be delivered• directly to destination domains using MX records or• through another SMTP server, so called relay SMTP serverThis can be configured in the administration interface in section Configuration → SMTP Server→ tab SMTP Delivery.95
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© 2013 Kerio Technologies s.r.o.
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Configuring anti-spoofing in Kerio
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Configuring instant messaging in Ke
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Installing Kerio ConnectKerio Conne
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Installing Kerio ConnectNew install
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Upgrading Kerio ConnectWhat can be
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Upgrading Kerio ConnectUse this com
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Uninstalling Kerio ConnectDuring th
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Kerio Connect VMware Virtual Applia
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Kerio Connect VMware Virtual Applia
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Accessing Kerio ConnectFigure 1Admi
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Accessing Kerio ConnectKerio Connec
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Registering Kerio ConnectWhy to reg
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Registering Kerio ConnectInstalling
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Accessing Kerio Connect administrat
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Accessing Kerio Connect administrat
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Domains in Kerio ConnectInternet ho
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Creating domains in Kerio ConnectAd
Page 44 and 45: Connecting Kerio Connect to directo
Page 46 and 47: Connecting Kerio Connect to directo
Page 48 and 49: Renaming domains in Kerio ConnectWh
Page 50 and 51: Distributed domains in Kerio Connec
Page 52 and 53: Creating user accounts in Kerio Con
Page 54 and 55: Creating user accounts in Kerio Con
Page 56 and 57: Creating user groups in Kerio Conne
Page 58 and 59: Creating user groups in Kerio Conne
Page 60 and 61: Setting access rights in Kerio Conn
Page 62 and 63: Maintaining user accounts in Kerio
Page 68 and 69: Creating mailing lists in Kerio Con
Page 70 and 71: Importing users in Kerio ConnectWhe
Page 72 and 73: Importing users in Kerio Connect3.
Page 74 and 75: Exporting users in Kerio ConnectExp
Page 76 and 77: Creating aliases in Kerio ConnectFi
Page 78 and 79: Creating aliases in Kerio ConnectEx
Page 80 and 81: Configuring resources in Kerio Conn
Page 82 and 83: Monitoring Kerio ConnectMonitoring
Page 84 and 85: Monitoring Kerio Connect• interva
Page 86 and 87: Monitoring Kerio ConnectTo display
Page 88 and 89: Services in Kerio ConnectFigure 1Se
Page 90 and 91: Services in Kerio Connect• (HTTPS
Page 92 and 93: Protecting SMTP the server in Kerio
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Page 98 and 99: Securing Kerio ConnectPassword poli
Page 100 and 101: Configuring anti-spoofing in Kerio
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Page 104 and 105: Password policy in Kerio Connect3.
Page 106 and 107: Password policy in Kerio ConnectNot
Page 108 and 109: Authenticating messages with DKIMTo
Page 110 and 111: Configuring DNS for DKIMAdding a DK
Page 112 and 113: Configuring DNS for DKIMGenerating
Page 114 and 115: Configuring DNS for DKIMKerio Conne
Page 116 and 117: Configuring spam control in Kerio C
Page 118 and 119: Configuring spam control in Kerio C
Page 120 and 121: Configuring greylistingFigure 1Grey
Page 122 and 123: Blocking messages from certain serv
Page 124 and 125: Blocking messages from certain serv
Page 126 and 127: Configuring Caller ID and SPF in Ke
Page 128 and 129: Creating custom rules for spam cont
Page 130 and 131: Antivirus control in Kerio ConnectA
Page 132 and 133: Antivirus control in Kerio ConnectC
Page 134 and 135: Filtering message attachments in Ke
Page 136 and 137: Configuring IP address groupsWhen t
Page 138 and 139: Creating time ranges in Kerio Conne
Page 140 and 141: Public folders in Kerio ConnectCrea
Page 142 and 143: Configuring instant messaging in Ke
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Configuring instant messaging in Ke
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Configuring DNS for instant messagi
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Customizing Kerio ConnectDefining c
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Customizing Kerio Connect3. Open th
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Translating Kerio Connect client to
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Configuring data store in Kerio Con
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Archiving in Kerio ConnectWhat can
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Archiving in Kerio ConnectNo diacri
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Backups in Kerio ConnectFigure 1Arc
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Examples of data recovery in Kerio
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Examples of data recovery in Kerio
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Data recovery in Kerio ConnectRecov
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Data recovery in Kerio ConnectAbbre
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Data recovery in Kerio Connect• l
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Configuring SSL certificates in Ker
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Managing logs in Kerio ConnectWhat
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Managing logs in Kerio Connectcan,
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Kerio Open Directory ExtensionHow t
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Managing mobile devicesManaging mob
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Managing mobile devicesIt is not po
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Switching between Kerio Connect cli
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Kerio Connect — Legal noticesTrad
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Kerio Connect — Legal noticesBluf
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Kerio Connect — Legal noticeslibs
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Kerio Connect - Administrators Guide - Kerio Software Archive

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