Changing the IMAP server's banner -- does one still need to patch the source?

Christoph Moench-Tegeder cmt at
Thu Jun 16 18:07:23 EDT 2005

## Ralph Seichter (cyrus-ml at

> I'm looking for a configuration parameter to change Cyrus IMAP's
> banner text. A banner like
>   * OK server.tld Cyrus IMAP4 v2.2.3 server ready
> is giving too much away about the server, IMHO. For security reasons,
> I'd like show only the information required by RFC definition.

It's in src/imapd.c, line 823 (cyrus-imapd-2.2.12) (long live grep).
If you really think it helps...

> Entries in the mailing list archive suggested patching the source,
> but these were written in 2002, so perhaps there is now a way to set
> the greeting banner via a configuration option instead?

Most people do not share your trust in disabling banner strings,
so nobody has written a patch yet.


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