[Dovecot] Sieve/pigeonhole rejects email addresses for valid UNIX users
Stephan Bosch
stephan at rename-it.nl
Tue Aug 28 18:08:49 EEST 2012
Op 8/22/2012 8:56 AM, David Anderson schreef:
>
> Self-explanatory, I hope (note the period on the end of the username);
> sieve/pigeonhole does not allow you to have senders which end with a
> period, which means that any UNIX users with such usernames who send
> mail have it rejected by sieve:
>
> # useradd testuser.
> # su - testuser.
> $ mail david at example.com -s 'testing'
> 123
> .
> [testuser. at levi ~]$ logout
>
> # less /var/log/maillog
>
> Aug 22 07:50:56 levi dovecot: lda(david at example.com): Error: sieve:
> envelope sender address 'testuser. at myhost.example.com' is unparsable
>
> Versions:
> dovecot-pigeonhole-0.2.6-21.el5
> dovecot-managesieve-0.2.6-21.el5
> dovecot-2.0.18-1_134.el5
>
> Why would anyone have a UNIX username ending in a period? For one, web
> hosting companies may use your domain name as your username - but be
> subject to a 32-character limit, so your domain name gets truncated.
I would have expected to see that address escaped as
"testuser."@myhost.example.com. I notice that I haven't tested such
addresses much with Sieve and I don't actually know in what form MTAs
provide such addresses to the LDA. I'll give that a look soon.
Regards,
Stephan.
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