libESMTP is officially hosted at https://libesmtp.github.io/.
Do not use copies of libESMTP obtained elsewhere. I do not endorse other repositories which may contain copies or modifications to libESMTP.
The libesmtp-1.0.6 and earlier tarballs are widely distributed, however, being a decade or more old they all contain defunct links. I have no idea how widespread these are or whether they have been modified. It is impossible for me to verify their authenticity, without expending some effort, and I am not prepared to do so or to discuss the matter.
All users are strongly encouraged to discard any tarballs in favour of the GitHub repository.
The old libESMTP websites at stafford.uklinux.net and brianstafford.info are gone permanently. brianstafford.info now belongs to a namesake.
Other than for libESMTP, I had no further use for the brianstafford.info domain. Since the web and email hosting fees were a couple of hundred pounds annually and paid for at my own expense for no particular benefit, I cancelled the service.
Bug-fixes or other enhancements that have been made against the v1.0.6 tarball, or other repositories, should be resubmitted as pull requests to https://github.com/libesmtp/libESMTP.
libESMTP 1.0.6 may be found on the
libesmtp-1.0.6 branch, however please
also read the errata.
See also the Reporting Bugs guidelines.