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Comparison of mail servers





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Comparison of mail servers

From Wikipedia, the free encyclopedia

This is a comparison of mail servers: mail transfer agents, mail delivery agents, and other computer software which provide e-mail services.

Feature comparison

Mail server Li- nux/ Unix Win- dows Mac OS X SMTP POP3 IMAP SMTP over TLS POP over TLS NNTP SSL Web- mail Acti- ve Sync Data- base File sys- tem Oth- er Licen- se
info Server OS support Features Storage info
agorum core Yes Yes No Yes No Yes No No No Yes Yes No Yes No No Open Sour- ce/ GPLv2
Apache James Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Yes Yes No Open Sour- ce/ ASLv2
Atmail Yes No Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes No Propri- etary (Free 5 user)
Axigen Yes Yes No Yes Yes Yes Yes Yes No Yes Yes Yes No No Yes Propri- etary
Citadel Yes No Yes Yes Yes Yes Yes Yes ? Yes Yes No Yes No No Open Sour- ce/ GPLv3
Com- muni Gate Pro Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes No Yes No Propri- etary
Courier Mail Server Yes No Yes Yes Yes Yes Yes Yes ? Yes Yes No No mail- dir No Open Source
Cyrus IMAP Yes No Yes No Yes Yes No Yes Yes Yes No No Yes (inde- xes) Yes Yes Open Sour- ce/ BSD
Dove- cot Yes No Yes No Yes Yes No Yes No Yes No No Yes mail- dir, mbox, dbox No Open Sour- ce/ Mixed: MIT and LGPL 2.1
Eudora Inter- net Mail Server No No Yes Yes Yes Yes No No No No No No No No Yes Propri- etary
Exim Yes via Cyg- win Yes Yes No No Yes No No Yes No No Yes Yes No Open Sour- ce/ GPL
First- Class Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Propri- etary
Gorda- no Messa- ging Suite Yes Yes No Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Propri- etary
Group Wise Yes Yes No Yes Yes Yes Yes Yes ? Yes Yes Yes Yes No No Propri- etary
Hexa- mail Server Yes Yes No Yes Yes Yes Yes Yes No Yes Yes No No Yes No Propri- etary
hMail- Server No Yes No Yes Yes Yes V 5.0 V 5.0 No V 5.0 Yes No Yes No No GNU GPL (V5.0 Propri- etary)
IBM Lotus Domino Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Propri- etary
Indi- Mail Yes No Yes Yes Yes Yes Yes Yes No Yes No No Yes Yes No Open Sour- ce/ GPLv3
Ips- witch IMail Server No Yes No Yes Yes Yes Yes Yes No Yes Yes Yes No Yes No Propri- etary
Kerio Con- nect Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Propri- etary
Mail- Site Fusion No Yes No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Propri- etary
Mail- traq No Yes No Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Propri- etary
MDae- mon Mail Server No Yes No Yes Yes Yes Yes Yes No Yes Yes No No Yes No Propri- etary
Meld- ware Mail Server Yes Yes Yes Yes Yes Yes Yes Yes ? Yes Yes No Yes Yes No Open sour- ce/ LGPL
Mer- cury Mail Trans- port System No Yes No Yes Yes Yes Yes Yes No Yes Yes No No Yes No Propri- etary/ free- ware
Micro- soft Ex- change Server No Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes ESE only Yes (up to 2003 only) No Propri- etary
Mira- point Yes No No Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Propri- etary
Net- Mail Yes Yes No Yes Yes Yes Yes Yes ? Yes Yes No Yes No No Propri- etary
Open- Xchan- ge Yes No No Yes Yes Yes Yes Yes ? Yes Yes Yes Yes No No Dual licen- se (GPL)
Oracle Com- muni- cations Messa- ging Ex- change Server Yes No No Yes Yes Yes Yes Yes No Yes Yes No Yes Yes No Propri- etary
Postfix Yes No Yes Yes No No Yes No No Yes No No Yes Yes Yes Open sour- ce/ IBM Public Licen- se
qmail Yes No Yes Yes Yes No No No ? No No No No Yes No Public domain
Qpop- per Yes Yes Yes No Yes No No Yes No Yes No No No Yes Yes BSD- style
Send- mail Yes No Yes Yes No No Yes No No No No No ? Yes ? Open source/ Send- mail Licen- se
Spark Engine Yes Yes Yes Yes No No Yes No No Yes No No Yes Yes Yes Propri- etary
Surge- Mail Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Propri- etary (Free 5 user)
Syno- vel Collab- suite Yes No No Yes Yes Yes Yes Yes ? Yes Yes No Yes Yes ? Open Sour- ce/ Propri- etary
UW IMAP Yes Yes Yes No Yes Yes No Yes No Yes Web- Pine No No Yes No Open Sour- ce/ Apa- che licen- se
Win- Gate No Yes No Yes Yes Yes Yes Yes ? Yes Yes No No Yes No Propri- etary
Zarafa Yes No No Yes Yes Yes Yes Yes ? Yes Yes Yes Yes Yes No Open Sour- ce/ Propri- etary
Zim- bra Yes No Yes Yes Yes Yes Yes Yes ? Yes Yes Yes Yes Yes No Open Sour- ce/ Propri- etary
info Server OS support Features Storage info
Mail server Li- nux/ Unix Win- dows Mac OS X SMTP POP3 IMAP SMTP over TLS POP over TLS NNTP SSL Web- mail Acti- ve Sync Data base File sys- tem Oth- er Licen- se

Authentication

Mail server SMTP AUTH POP before SMTP APOP File-system Database LDAP Other
agorum core Yes No No No Yes Yes

PLAIN, LOGIN,
CRAM-MD5, NTLM

Apache James Yes ? ? ? Yes Yes ?
Atmail Yes Yes Yes Yes Yes Yes PLAIN, LOGIN,
CRAM-MD5, DIGEST-MD5,
Active Directory,
any LDAP-compatible source
Axigen Yes No Yes No No Yes GSSAPI, CRAM-MD5,
DIGEST-MD5, APOP,
CLRTXT, LOGIN,
PLAIN, LDAP, Internal
CommuniGate Pro Yes Yes Yes Yes No Yes CLRTXT, CRAM-MD5,
DIGEST-MD5,
APOP, GSSAPI,
NTLM, MSN,
SESSIONID, External
Authentication Plug-in
Courier Mail Server Yes Yes Yes Yes Yes Yes Managed by Courier
authentication
library which
can use PAM,
Userdb,
PostgreSQL(beta),
MySQL, LDAP,
and EXTERNAL.
Cyrus IMAP No Yes Yes Yes Yes Yes Supports all Cyrus
SASL authentication
methods. Also
supports X.509
PKI auth via
STARTTLS and EXTERNAL.
Cyrus SASL Library No No Yes Yes Yes Yes Berkeley DB, GDBM,
or NDBM (sasldb),
PAM, MySQL,
PostgreSQL, SQLite,
LDAP, Active
Directory(LDAP), DCE,
Kerberos 4 and 5,
proxied IMAP auth, getpwent,
shadow, SIA,
Courier Authdaemon,
httpform, APOP
and SASL mechanisms
Dovecot No No Yes Yes Yes Yes Not an SMTP
server, but offers
SASL to MTAs.
http://wiki.dovecot.org
/DovecotFeatures http://wiki.dovecot.org
/Authentication
Eudora Internet Mail Server Yes No Yes Yes No No CRAM-MD5, DIGEST-MD5, PLAIN, LOGIN
Exim Yes ? Yes Yes Yes Yes Cyrus SASL, Dovecot SASL, CRAM-MD5, PLAIN, LOGIN, SPA
FirstClass Yes ? ? Yes Yes Yes
Gordano Messaging Suite Yes Yes Yes No Yes Yes PLAIN, LOGIN, CRAM-MD5, DIGEST-MD5, APOP, ODBC, Active Directory, NT Domain
GroupWise Yes Yes Yes Yes Yes Yes eDirectory, Any LDAPv3-compliant source
Hexamail Server Yes Yes Yes Yes No Yes CLRTXT, CRAM-MD5, DIGEST-MD5, APOP, GSSAPI, NTLM, MSN, SESSIONID
IndiMail Yes Yes No Yes Yes No CLRTXT, PLAIN, LOGIN, CRAM-MD5, APOP, Checkpassword, authvchkpw
Ipswitch IMail Server Yes No Yes Yes Yes Yes Active Directory, Windows authentication, CRAM-MD5, PLAIN, LOGIN
Kerio Connect Yes Yes Yes Yes No Yes Active Directory, Apple Open Directory, ActiveSync, Pluggable Authentication Modules
MailSite Fusion Yes No Yes Yes Yes Yes NT Domain, Active Directory, PLAIN, LOGIN, NTLM, SCRAM-MD5, CRAM-MD5
Mailtraq Yes Yes Yes Yes Yes Yes NT Domain, Active Directory, Local Directory
MDaemon Mail Server Yes Yes Yes No Yes Yes Active Directory, PLAIN, CRAM-MD5, LOGIN
Meldware Mail Server Yes No Yes Yes Yes Yes ?
Mercury Mail Transport System Yes Yes Yes Yes No ? Internal, LOGIN, PLAIN, CRAM-MD5, Netware, LDAP?, partial NT Domain
Microsoft Exchange Server Yes ? Yes No No Yes Active Directory
Mirapoint Yes Yes Yes Yes Yes Yes Plaintext, LDAP, NTLM, APOP, Kerberos_v4, Kerberos_v5, Radius, Sessionid
NetMail Yes Yes Yes Yes Yes Yes eDirectory, LDAP
Oracle Communications Messaging Exchange Server Yes Yes Yes Yes Yes Yes Plain, Login, CRAM-MD5, Digest-MD5, Certificate
Postfix Yes No No Yes Yes Yes Supports all Cyrus SASL authentication methods except for APOP.
Qpopper No Yes Yes Yes Yes Yes Pluggable Authentication Modules,GSSAPI, CRAM-MD5, DIGEST-MD5, APOP, PLAIN, LDAP, CMU SASL library, Kerberos
qmail ? ? ? ? ? ? ?
Sendmail Yes Yes No Yes Yes Yes Supports all Cyrus SASL authentication methods except for APOP. Also supports X.509 PKI auth via STARTTLS and EXTERNAL.
SurgeMail Yes Yes Yes Yes Yes Yes Internal, LDAP, PAM, MYSQL, ODBC, Unix Password, Windows Domain or external protocol
WinGate Yes Yes Yes Yes Yes No NT Domain, Active Directory, CRAM-MD5, SASL PLAIN, SASL LOGIN
Zarafa Yes Yes ? Yes Yes Yes Internal, Active Directory, any LDAP-compatible source, Unix
Zimbra Yes No Yes Yes Yes Yes Internal, LDAP, Open LDAP, Active Directory

Antispam Features

Mail
Server
DNSBL SURBL Spam
traps
Grey
listing
SPF Tarpit Bayesian
filters
Regular expres-sions Embedded Antivirus Embed-
ded Anti-
spam
agorum
core
No No No No No No No Yes No No
Apache
James
? ? ? ? ? ? Yes ? ? ?
Atmail Yes Yes No Yes Yes No Yes Yes Yes
ClamAV
?
Axigen Yes No No Yes Yes No

Yes, in Spam- Assassin

Yes Yes Com- mtouch Yes
Spam- Ass- assin
Citadel Yes Yes No No Opt-
ional
(via
Spam
Ass- assin)
No Optional (via Spam
Assassin)
No Optional (ClamAV) Opti-
onal (Spam- Ass-
assin)
Communi
Gate Pro
Yes Yes Yes No Yes Yes Optional Yes Optional Optional
Courier
Mail Server
Yes ? Yes Yes Yes Yes Yes Yes Yes Clamav Yes
Dovecot ? ? ? ? ? ? ? ? ? ?
Eudora
Internet Mail
Server
Yes ? Yes Yes ? ? ? ? ? ?
Exim Yes Yes Yes Yes Yes Yes Optional with spam-
assasin etc.
Yes Optional
any
Optional
any
FirstClass Yes Yes No ? Yes Yes Yes Yes Yes Symantec ?
Gordano Messaging
Suite
Yes Yes Yes Yes Yes Yes Yes Yes Yes Com- mtouch, Authentium Yes
Comm-touch
Group
Wise
Yes ? ? ? ? ? ? ? ? ?
Hexamail
Server
Yes Yes Yes Yes Yes Yes Yes Yes Yes Avast ?
hMail- Server Yes Yes No Yes Yes No No Yes Yes ClamAV Yes Spam- Ass- assin
IBM Lotus Domino Yes< ? ? ? No ? ? ? ? ?
IndiMail Yes No No Yes Yes Yes Yes Yes Yes
ClamAV
Yes
Bogo-
filter
Ipswitch
IMail Server
Yes Yes No No Yes No Yes Yes Yes Symantec, BitDefender Yes
Com-
mtouch
Kerio
Connect
Yes Yes ? No Yes Yes Yes ? Optional McAfee + optional secondary (dual) Yes
MailSite
Fusion
Yes Yes Yes Yes Yes No Yes Yes Yes Yes
Mailtraq ? ? ? ? ? ? ? ? ? ?
MDaemon
Mail
Server
Yes Yes Yes Yes Yes Yes Yes Yes Optional Kaspersky Labs Yes
Meldware
Mail
Server
? ? ? ? ? ? ? ? ? ?
Mercury Mail Transport System Yes ? ? Yes
? ? Yes (Spam- Halter exten- sion) ? Yes (ClamWall extension) ?
Microsoft Exchange
Server
Yes (2003 & later) ? ? Yes Yes Yes (2007 & later) ? ? ? ?
Mirapoint Yes No Yes Yes Yes Yes Yes Yes Yes Commtouch, Sophos, F-Secure Yes
Comm- touch, Sophos, SPam- Ass- assin
NetMail ? ? ? ? ? ? ? ? ? ?
Oracle Communi-
cations Messa-
ging Exchange
Server
Yes Yes Yes Yes Yes Yes Optional with spam-
assasin etc.
Yes Optional any Optional any
Postfix Yes ? ? Yes Yes ? Opti-
onal
with
spam ass-
asin etc.
Yes Optional (via content filter interface) Opti-
onal (via content filter inter-face)
qmail ? ? ? Yes ? ? No ? No No
Sendmail ? ? ? Yes ? ? ? ? ? ?
Spark Engine ? ? ? ? ? ? ? ? ? ?
SurgeMail Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Synovel Collab- suite Yes Yes Yes Yes Yes ? Yes Yes YesClamAV Yes Spam- Ass-
assin
UW IMAP ? ? ? ? ? ? ? ? ? ?
WinGate ? ? ? ? ? ? ? ? ? ?
Zarafa ? ? ? ? ? ? ? ? ? ?
Zimbra Yes ? ? ? ? ? ? ? Yes ClamAV Yes Spam- Ass-
assin
Mail Server DNSBL SURBL Spam
traps
Grey
listing
SPF Tarpit Bayesian
filters
Regular expres-
sions
Embedded Antivirus Embed- ded Anti
spam




Published - November 2010









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