bad timestamp in case of gmtoff%60!=0
Hi!
When I use [this timezone file](http://www0.wgboome.org/zoneinfo-TAI.tar.xz), and when I receive an email at 2022-07-28T04:48:54+00:00:37,
then fetchmail writes:
`Received: from ssl02.blah.blub [1.2.3.4] by vaako.intern.wgboome.org with POP3 (fetchmail-6.4.31) for <aw@localhost> (single-drop); Thu, 28 Jul 2022 04:48:54 +0000 (TAI)`
Workaround:
I wrote I wrapper, which seems to help...
```
# cat fetchmail
#!/bin/sh
TZ=UTC /bin/fetchmail,orig $@
```
Can u fix it somehow inside the binary?
Maybe 2 further timezone offset digits are compliant?
Or fetchmail just writes the timezone name (in this case "TAI" without brackets) and omits the "+HHMM"?
Or fetchmail changes the timezone to UTC, when it detects that gmtoff%60 is not zero?
That is what exim does, since i pointed it out...
Thx.
Bye
Arne
issue