Comparison of mail servers

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Template:Short description

The comparison of mail servers covers mail transfer agents (MTAs), mail delivery agents, and other computer software that provide e-mail services.

Unix-based mail servers are built using a number of components because a Unix-style environment is, by default, a toolbox[1] operating system. A stock Unix-like server already has internal mail; more traditional ones also come with a full MTA already part of the standard installation. To allow the server to send external emails, an MTA such as Sendmail, Postfix, or Exim is required. Mail is read either through direct access (shell login) or mailbox protocols like POP and IMAP. Unix-based MTA software largely acts to enhance or replace the respective system's native MTA.

Microsoft Windows servers do not natively implement e-mail, thus Windows-based MTAs have to supply all the necessary aspects of e-mail-related functionality.

Feature comparison

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Mail server Linux/Unix Windows macOS SMTP POP3 IMAP JMAP IDLE SMTPS POP3S IPv6 SSL DANE Webmail ActiveSync Sieve IDN/UTF8 Database File-based
Template:Rh| agorum core Yes Yes No Yes No Yes No No No No No Yes No Yes No No ? Yes No Template:Open source
Template:Rh| Apache James Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes ? Yes ? No No Yes ? Yes Yes Template:Open source
Template:Rh| Axigen Yes Yes No Yes Yes Yes ? Yes Yes Yes Yes Yes ? Ajax, Basic & Mobile Yes Yes Yes Embedded, Optimized for Email & Groupware Yes Template:Proprietary (free version: 5 domains, 5 users, 5 groups)
Template:Rh| Citadel Yes No Yes Yes Yes Yes ? No Yes Yes Yes Yes ? Yes No Yes ? Yes No Template:Open source
Template:Rh| CommuniGate Pro Yes Yes Yes Yes Yes Yes ? Yes Yes Yes Yes Yes ? Yes Yes ? Yes Yes Yes Template:Proprietary (Free for up to 5 users)
Template:Rh| Courier Mail Server Yes No Yes Yes Yes Yes ? Yes Yes Yes Yes Yes No Yes No maildrop Yes No maildir Template:Open source[2]
Template:Rh| Cyrus IMAP Yes No Yes No Yes Yes Yes Yes No Yes Yes Yes No No No Yes No[3] Indexes only Yes Template:Open source[4]
Template:Rh| DBMail Yes No Yes No Yes Yes No Yes No Yes Yes Yes No No No No Yes Yes No Template:Open source
Template:Rh| Dovecot Yes[5] No Yes Yes[6] Yes Yes No Yes Yes Yes Yes Yes No No No Yes No Yes maildir, mbox, dbox, mdbox, obox[7] Template:Open source[8]
Template:Rh| Eudora Internet Mail Server No No Yes Yes Yes Yes ? ? No No ? No ? No No ? ? No No Template:Proprietary
Template:Rh| Exim Yes Yes (via Cygwin) Yes Yes No No ? No Yes No Yes Yes Yes[9] No No Yes Yes Yes Yes Template:Open source[10]
Template:Rh| FirstClass Yes Yes Yes Yes Yes Yes ? ? Yes Yes ? Yes ? Yes Yes ? ? Yes Yes Template:Proprietary
Template:Rh| Gordano Messaging Suite Yes Yes No Yes Yes Yes ? Yes Yes Yes ? Yes ? Yes Yes No ? Yes Yes Template:Proprietary
Template:Rh| GroupWise Yes Yes No Yes Yes Yes ? ? Yes Yes ? Yes ? Yes Yes ? ? Yes No Template:Proprietary
Template:Rh| Halon Yes No No Yes No No ? No Yes No Yes Yes Yes[11] No No ? Yes Yes Yes Template:Proprietary
Template:Rh| Haraka Yes Yes Yes Yes No No ? No Yes No Yes Yes ? No No ? Yes Yes Yes Template:Open source
Template:Rh|hMailServer No Yes No Yes Yes Yes ? Yes Yes Yes Yes Yes ? Yes No ? No Yes Yes Template:Open source
Template:Rh| HCL Domino Yes Yes No Yes Yes Yes No No Yes Yes Yes Yes No Yes Yes [12] No Yes Yes No Template:Proprietary
Template:Rh| IceWarp Mail Server Yes Yes Yes Yes Yes Yes ? Yes Yes Yes Yes Yes No Yes Yes No ? Yes Yes Template:Proprietary
Template:Rh| Ipswitch IMail Server No Yes No Yes Yes Yes ? Yes (since v12.2)[13] Yes Yes ? Yes ? Yes Yes ? ? No Yes Template:Proprietary
Template:Rh| Kerio Connect Yes Yes Yes Yes Yes Yes ? Yes Yes Yes Yes Yes ? Yes Yes Yes ? No Yes Template:Proprietary
Template:Rh| Kolab Yes No No Yes Yes Yes ? Yes Yes Yes Yes Yes Yes Yes Yes Yes ? Yes Yes Template:Open source
Template:Rh| Kopano Yes No No postfix, etc.[14] Yes Yes No Yes postfix Yes Yes Yes postfix Yes z-push No Yes SQL Yes Template:Open source[15]
Template:Rh| KumoMTA Yes No No Yes No No ? No Yes No Yes Yes Yes No No Lua Yes Yes Yes Template:Open source
Template:Rh| Mailsite No Yes No Yes Yes Yes ? ? Yes Yes ? Yes ? Yes Yes Yes ? Yes Yes Template:Proprietary
Template:Rh| Mailtraq No Yes No Yes Yes Yes ? Yes Yes Yes ? Yes ? Yes No ? ? Yes Yes Template:Proprietary
Template:Rh| MDaemon No Yes No Yes Yes Yes ? Yes Yes Yes Yes Yes No Yes Yes No Not IMAP No Yes Template:Proprietary
Template:Rh| Mercury Mail Transport System No Yes No Yes Yes Yes ? Yes Yes Yes No Yes No Yes No No No No Yes Template:Proprietary
Template:Rh| Microsoft Exchange Server No Yes No Yes Yes Yes No Yes[16][17] Yes Yes Yes [18] Yes No Yes Yes 3rd Party support Not IMAP Yes Yes Template:Proprietary
Template:Rh| NetMail Yes Yes No Yes Yes Yes ? ? Yes Yes ? Yes ? Yes No ? ? Yes No Template:Proprietary
Template:Rh| OpenSMTPD Yes No Yes Yes No No No No Yes No Yes Yes No[19] No No No No via custom backends Yes Template:Open source
Template:Rh| Open-Xchange Yes No No Yes Yes Yes ? ? Yes Yes ? Yes ? Yes Yes ? ? Yes No Template:Proprietary[20]
Template:Rh| Oracle Communications Messaging Server Yes No No Yes Yes Yes ? ? Yes Yes ? Yes ? Yes No ? Yes Yes Yes Template:Proprietary
Template:Rh| Postfix Yes No Yes Yes No No ? No Yes No Yes Yes Yes No No No Yes Yes Yes Template:Open source
Template:Rh| qmail Yes No Yes Yes Yes No No No with ucspi-ssl, with patch with ucspi-ssl s/qmail, via Qsmtp with ucspi-ssl, with patch s/qmail No No No s/qmail (cdb) Yes Template:Open source
Template:Rh| Qpopper Yes Yes (via Cygwin) Yes No Yes No ? No No Yes ? Yes ? No No ? ? No Yes Template:Open source[21]
Template:Rh| Scalix Yes No No Yes Yes Yes ? Yes Yes (via Stunnel) Yes (via Stunnel) ? Yes (via Stunnel) ? Yes Yes ? ? Yes Yes Proprietary with OSS parts,
a community (Freeware)
and 3 paid editions
(SMB, Enterprise, Hosting)
Template:Rh| Sendmail Yes No Yes Yes No No ? No Yes No Yes Yes Yes (since 8.16)[22] No No No Yes ? Yes Template:Open source
Template:Rh| SparkEngine Yes Yes Yes Yes No No ? No Yes No ? Yes ? No No ? ? Yes Yes Template:Proprietary
Template:Rh| UW IMAP Yes Yes Yes No Yes Yes ? Yes No Yes Yes Yes No WebPine No No ? Yes (Indexes) Yes Template:Open source[23]
Template:Rh| WinGate No Yes No Yes Yes Yes ? Yes Yes Yes No Yes ? Yes No ? ? No Yes Template:Proprietary
Template:Rh| Zarafa Yes No No postfix etc.[14] Yes Yes No Yes postfix Yes Yes Yes postfix Yes z-push No No SQL Yes Template:Open source[15]
Template:Rh| Zentyal Yes No No Yes Yes Yes ? Yes Yes Yes No Yes ? Yes Yes ? ? Yes Yes Template:Proprietary
Template:Rh| Zimbra Yes No Yes Yes Yes Yes ? Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes ZPL and proprietary editions[24]
Mail server Linux/Unix Windows macOS SMTP POP3 IMAP JMAP IDLE SMTPS POP3S IPv6 SSL DANE Webmail ActiveSync Sieve IDN/UTF8 Database File-based License

Authentication

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Mail server Template:Verth Template:Verth Template:Verth Template:Verth Template:Verth Template:Verth Template:Verth Other
Template:Rh| agorum core Yes No No No Yes Yes ? PLAIN, LOGIN, CRAM-MD5,[25] NTLM
Template:Rh| Apache James Yes ? ? ? Yes Yes ? PLAIN, LOGIN
Template:Rh| Axigen Yes No Yes Yes No Yes No GSSAPI, CRAM-MD5,[25] DIGEST-MD5,[26] APOP, CLRTXT, LOGIN, PLAIN, LDAP, Internal
Template:Rh| CommuniGate Pro Yes Yes Yes Yes Yes Yes ? Active Directory (LDAP), CLRTXT, CRAM-MD5,[25] DIGEST-MD5,[26] APOP, GSSAPI, NTLM, MSN, SESSIONID, External Authentication Plug-in. Also supports X.509 PKI auth via STARTTLS/SSL
Template:Rh| 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.
Template:Rh| Cyrus IMAP Yes Yes Yes Yes Yes Yes ? Supports X.509 PKI auth via STARTTLS and EXTERNAL. Uses Cyrus SASL authentication library for support for other mechanisms: 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: ANONYMOUS, CRAM-MD5,[25] DIGEST-MD5,[26] SCRAM-SHA-1(-PLUS), SCRAM-SHA-224(-PLUS), SCRAM-SHA-256(-PLUS), SCRAM-SHA-384(-PLUS), SCRAM-SHA-512(-PLUS), EXTERNAL, GSSAPI, LOGIN, NTLM, OTP, PASSDSS, PLAIN, SRP
Template:Rh| DBMail No No No No Yes Yes No LOGIN, Active Directory, OpenLDAP
Template:Rh| Dovecot Yes Yes Yes Yes Yes Yes ? Submission service supports SMTP AUTH.[6] Offers SASL to MTAs.[27][28] POP-before-SMTP via DRAC plugin. PAM, MySQL, PostgreSQL, SQLite, LDAP, Active Directory(LDAP), Kerberos 5, proxied IMAP auth, getpwent, shadow, SIA, BSDauth, Vpopmail. APOP and SASL mechanisms: ANONYMOUS, PLAIN, LOGIN, CRAM-MD5,[25] DIGEST-MD5,[26] SCRAM-SHA-1, EXTERNAL, GSSAPI, NTLM, OTP, SKEY, RPA.
Template:Rh| Eudora Internet Mail Server Yes No Yes Yes No No Yes CRAM-MD5,[25] DIGEST-MD5,[26] PLAIN, LOGIN
Template:Rh| Exim Yes Yes Yes Yes Yes Yes ? Cyrus SASL, Dovecot SASL, GNU SASL, CRAM-MD5,[25] Heimdal GSSAPI, PLAIN, LOGIN, SPA
Template:Rh| FirstClass Yes ? ? Yes Yes Yes ?
Template:Rh| Gordano Messaging Suite Yes Yes Yes No Yes Yes ? PLAIN, LOGIN, CRAM-MD5,[25] DIGEST-MD5,[26] APOP, ODBC, Active Directory, NT Domain
Template:Rh| GroupWise Yes Yes Yes Yes Yes Yes ? eDirectory, Any LDAPv3-compliant source
Template:Rh| Halon Yes No No Yes Yes Yes ? Many mechanism (SMTP callout, Dovecot SASL, REST, etc.) via script.[29]
Template:Rh| Haraka Yes No No Yes Yes Yes ? Proxy to other server, any other mechanism via AUTH plugins.
Template:Rh| HCL Domino Yes No No No Yes Yes Yes[30] Passkeys, Time-based one-time password
Template:Rh| IceWarp Mail Server Yes Yes Yes Yes Yes Yes ? PLAIN, LOGIN, CRAM-MD5,[25] NTLM
Template:Rh| Ipswitch IMail Server Yes No Yes Yes Yes Yes Yes Active Directory, Windows authentication, CRAM-MD5,[25] PLAIN, LOGIN
Template:Rh| Kolab Yes Yes Yes Yes Yes Yes ? Kolab employs Cyrus and Postfix and thus supports all Cyrus SASL authentication methods and X.509 PKI auth via STARTTLS and EXTERNAL.
Template:Rh| Mailsite Yes No Yes Yes Yes Yes ? NT Domain, Active Directory, PLAIN, LOGIN, NTLM, SCRAM-MD5, CRAM-MD5[25]
Template:Rh| Mailtraq Yes Yes Yes Yes Yes Yes ? NT Domain, Active Directory, Local Directory
Template:Rh| MDaemon Yes No Yes No No Yes Yes
Template:Rh| Mercury Mail Transport System Yes Yes Yes Yes No ? ? Internal, LOGIN, PLAIN, CRAM-MD5,[25] Netware, LDAP?, partial NT Domain
Template:Rh| Microsoft Exchange Server Yes ? Yes No No Yes Yes Active Directory, LOGIN,[31] NTLM
Template:Rh| NetMail Yes Yes Yes Yes Yes Yes ? eDirectory, LDAP
Template:Rh| Oracle Communications Messaging Server Yes Yes Yes Yes Yes Yes ? Plain, Login, CRAM-MD5,[25] DIGEST-MD5,[26] Certificate
Template:Rh| OpenSMTPD Yes No No Yes Yes Yes No By default PLAIN and LOGIN over SSL only, Certificates, bsd_auth and PAM. Supports adding new authentication mechanisms through custom backends.
Template:Rh| Postfix Yes No No Yes Yes Yes Yes Supports all Cyrus SASL authentication methods except for APOP.
Template:Rh| Qpopper No Yes Yes Yes Yes Yes ? Pluggable Authentication Modules, GSSAPI, CRAM-MD5,[25] DIGEST-MD5,[26] APOP, PLAIN, LDAP, CMU SASL library, Kerberos
Template:Rh| qmail with patch, s/qmail with vpopmail Yes Yes Yes Yes ? Works with any checkpassword utility. The original supports only LOGIN and PLAIN. Alternate checkpassword utilities support authentication against PAM, LDAP, and databases.
Template:Rh| Scalix Yes ? Yes Yes Yes Yes ? Internal, LOGIN, PLAIN, X.500 (DAP), LDAP, OpenLDAP, Active Directory, eDirectory, Kerberos, etc.
Template:Rh| 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.
Template:Rh| WinGate Yes Yes Yes Yes Yes No ? NT Domain, Active Directory, CRAM-MD5,[25] SASL PLAIN, SASL LOGIN
Template:Rh| Zarafa Yes No No Yes Yes Yes ? PLAIN, LOGIN using internal backends: Internal, Active Directory, any LDAP-compatible source, Unix
Template:Rh| Zentyal Yes Yes Yes Yes Yes Yes ? Active Directory using Dovecot SASL mechanisms
Template:Rh| Zimbra Yes No Yes Yes Yes Yes ? Internal, LDAP, Open LDAP, Active Directory
Mail server Template:Verth Template:Verth Template:Verth Template:Verth Template:Verth Template:Verth Template:Verth Other Authentication possibilites

Antispam features

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Mail Server DNSBL SURBL Spamtraps Greylisting SPF DKIM DMARC Tarpit Bayesian filters Regular expressions Embedded Antivirus Embedded Antispam
Template:Rh| agorum core No No No No No No No No No Yes No No
Template:Rh| Apache James ? ? ? ? ? ? ? ? Yes ? Yes ClamAV[32] Optional (Apache SpamAssassin)
Template:Rh| Axigen Yes No Yes Yes Yes Yes No No Yes, in SpamAssassin Yes Yes CYREN Yes CYREN
Template:Rh| Citadel Yes Yes No No Optional (via SpamAssassin) ? ? No Optional (via SpamAssassin) No Optional (ClamAV) Optional (SpamAssassin)
Template:Rh| Courier Mail Server Yes ? Yes Yes[33] Yes Optional[34] Optional[35] Yes Yes[33] Yes[33] Yes Clamav Yes[33]
Template:Rh| Dovecot No[36] No ? ? ? ? ? ? ? ? ? ?
Template:Rh| Eudora Internet Mail Server Yes ? Yes Yes ? ? ? ? ? ? ? ?
Template:Rh| Exim Yes Yes Yes Yes Optional (at build time, most distributions do) Optional (at build time, most distributions do) Optional (at build time, most distributions do) Yes Optional with spamassassin etc. Yes Optional any Optional any
Template:Rh| FirstClass Yes Yes No ? Yes ? ? Yes Yes Yes Yes Symantec ?
Template:Rh| Gordano Messaging Suite Yes Yes Yes Yes Yes ? ? Yes Yes Yes Yes CYREN, Authentium Yes CYREN
Template:Rh| GroupWise Yes ? ? ? ? ? ? ? ? ? ? ?
Template:Rh| Halon Yes Yes Yes Yes Yes Yes Yes Yes Optional (via SpamAssassin) Yes Optional (Sophos, ClamAV) Optional (CYREN, SpamAssassin, Eleven eXpurgate[37])
Template:Rh| Haraka Yes Yes Yes Yes Yes Yes ? Yes Optional with spamassassin etc. Yes Optional ClamAV, AVG, any via plugins Optional SpamAssassin, MessageSniffer
Template:Rh|HCL Domino Yes[38] ? ? ? Yes[39] Yes[40] ? ? ? ? Optional with ICAP ?
Template:Rh| hMailServer Yes Yes No Yes Yes Yes ? No No Yes Yes ClamAV Yes SpamAssassin
Template:Rh| IceWarp Mail Server Yes Yes Yes Yes Yes ? ? Yes Yes Yes Yes Yes
Template:Rh| Ipswitch IMail Server Yes Yes No No Yes Yes[41] Yes[42] No Yes Yes Yes Symantec, BitDefender Yes CYREN
Template:Rh| Kolab Yes ? ? Yes Yes ? ? ? Optional with spamassassin etc. Yes Optional (via content filter interface) Optional (via content filter interface)
Template:Rh| Mailsite Yes Yes Yes Yes Yes ? ? No Yes Yes Yes Yes
Template:Rh| Mailtraq ? ? ? ? ? ? ? ? ? ? ? ?
Template:Rh| MDaemon Yes Yes (via SpamAssassin) Yes Yes Yes Yes Yes Yes Yes (via SpamAssassin) Yes (via Content Filter) Optional Cyren, ClamAV Yes SpamAssassin
Template:Rh| Mercury Mail Transport System Yes ? ? Yes (GreyWall extension) ? ? ? ? Yes (SpamHalter extension) ? Yes (ClamWall extension) ?
Template:Rh| Microsoft Exchange Server Yes (2003 & later) ? ? Yes Yes Optional (Signing only via 3rd Party Extensions) ? Yes (2003 & later) ? ? ? ?
Template:Rh| NetMail ? ? ? ? ? ? ? ? ? ? ? ?
Template:Rh| OpenSMTPD ? ? ? ? Yes Optional[43] Optional[44] ? ? ? ? ?
Template:Rh| Oracle Communications Messaging Server Yes Yes Yes Yes Yes ? ? Yes Optional with spamassassin etc. Yes Optional any Optional any
Template:Rh| Postfix Yes Yes (via milter-link) ? Yes Yes Optional[45] Optional[46] Yes Optional with spamassassin etc. Yes Optional (via content filter interface) Optional (via content filter interface)
Template:Rh| qmail Yes with patch ? Yes with patch, s/qmail with patch, s/qmail ? with patch, s/qmail No ? No No
Template:Rh| Scalix Yes Yes (via Scalix AntiSpam powered by Cyren or SpamAssassin) Yes (via Scalix AntiSpam powered by Cyren or SpamAssassin) Yes Yes (via Scalix AntiSpam powered by Cyren or SpamAssassin) Yes (via Scalix AntiSpam powered by Cyren or SpamAssassin) Yes (via Scalix AntiSpam powered by Cyren or SpamAssassin) Yes Yes Yes Yes (via Scalix ZeroHour AntiVirus powered by Cyren or ClamAV) Yes
Template:Rh| Sendmail Yes Yes (via milter/SA) ? Yes Optional Optional[45] Optional[46] ? Optional with spamassassin etc. Yes Yes ClamAV Yes SpamAssassin
Template:Rh| SparkEngine ? ? ? ? ? ? ? ? ? ? ? ?
Template:Rh| UW IMAP ? ? ? ? ? ? ? ? ? ? ? ?
Template:Rh|WinGate ? ? ? ? ? ? ? ? ? ? ? ?
Template:Rh| Zarafa External[14] External[14] External[14] External[14] External[14] External[14] External[14] External[14] External[14] External[14] External[14] External[14]
Template:Rh| Zimbra Yes Yes (via SpamAssassin) ? Yes (via Cluebringer Policy Daemon) Yes Yes ? Yes Yes Yes (partially) Yes (via ClamAV, optionally any via Amavisd) Yes (via SpamAssassin)
Mail Server DNSBL SURBL Spamtraps Greylisting SPF DKIM DMARC Tarpit Bayesian filters Regular expressions Embedded Antivirus Embedded Antispam

See also

References

Template:Reflist

  1. ↑ Script error: No such module "citation/CS1".
  2. ↑ Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "citation/CS1".
  4. ↑ Script error: No such module "citation/CS1".
  5. ↑ Dovecot Operating System Compatibility. Retrieved on 2008-09-03.
  6. ↑ a b Dovecot Submission Service. Retrieved on 2010-07-15.
  7. ↑ Script error: No such module "citation/CS1".
  8. ↑ Script error: No such module "citation/CS1".
  9. ↑ Script error: No such module "citation/CS1".
  10. ↑ See NOTICE file in the distribution
  11. ↑ Script error: No such module "citation/CS1".Template:Self-published source
  12. ↑ Script error: No such module "citation/CS1".
  13. ↑ Script error: No such module "citation/CS1".
  14. ↑ a b c d e f g h i j k l m n Zarafa Collaboration Platform architecture diagram. Retrieved on 2011-12-10.
  15. ↑ a b Script error: No such module "citation/CS1".
  16. ↑ Script error: No such module "citation/CS1".
  17. ↑ Script error: No such module "citation/CS1".
  18. ↑ Script error: No such module "citation/CS1".
  19. ↑ Script error: No such module "citation/CS1".Template:Self-published source
  20. ↑ Script error: No such module "citation/CS1".
  21. ↑ Contains jurisdiction selection and IPL-style indemnification clause.
  22. ↑ Sendmail Release Notes. Retrieved on 2021-01-08.
  23. ↑ Script error: No such module "citation/CS1".
  24. ↑ Script error: No such module "citation/CS1".
  25. ↑ a b c d e f g h i j k l m n o CRAM-MD5 to Historic, 20 November 2008.
  26. ↑ a b c d e f g h Moving DIGEST-MD5 to Historic, July 2011.
  27. ↑ Script error: No such module "citation/CS1".
  28. ↑ Script error: No such module "citation/CS1".
  29. ↑ Script error: No such module "citation/CS1".
  30. ↑ Script error: No such module "citation/CS1".
  31. ↑ Script error: No such module "citation/CS1".
  32. ↑ Script error: No such module "citation/CS1".
  33. ↑ a b c d Script error: No such module "citation/CS1".
  34. ↑ Two DKIM filters can be found in Courier-MTA's links page
  35. ↑ With Script error: No such module "citation/CS1".
  36. ↑ Considered and rejected by developers in 2013. Script error: No such module "citation/CS1".
  37. ↑ Script error: No such module "citation/CS1".
  38. ↑ Script error: No such module "citation/CS1".
  39. ↑ Script error: No such module "citation/CS1".
  40. ↑ Script error: No such module "citation/CS1".
  41. ↑ Script error: No such module "citation/CS1".
  42. ↑ Script error: No such module "citation/CS1".
  43. ↑ With Script error: No such module "citation/CS1". or Script error: No such module "citation/CS1".
  44. ↑ With Script error: No such module "citation/CS1".
  45. ↑ a b Script error: No such module "citation/CS1".
  46. ↑ a b Script error: No such module "citation/CS1".
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