[pkg-fetchmail-maint] Bug#317761: fetchmail: Stops on underscore in domain part of email

[Matthias Andree]

severity 317761 normal
tags 317761 - moreinfo
tags 317761 + fixed-upstream
thanks

OK, here's the story:

On Claus's computer, fetchmail was unable to deliver a message and tried
to create a bounce. In order to provide decent information, fetchmail
6.2.5 tried to resolve (qualify) its own hostname through
gethostbyname(), which failed. This failure caused fetchmail to quit
with exit code 11 (PS_DNS).

However, this bounce would probably have been lost since the SMTP server
that rejects underscores in sender addresses is likely to reject them in
recipient addresses too. This is generally a problem if restrictions are
getting tighter along the path from the first MX through the internal
hops to the mailbox.

Anyways, fetchmail 6.2.9-rc8 and newer will no longer quit if they
cannot qualify their own hostname for purposes of the bounce, but
instead use the unqualified hostname.

-- 
Matthias Andree