Thanks very much for your reply, my followup below...
On Tue, 22 Nov 2011, Todd Lyons wrote:
>
> On Tue, Nov 22, 2011 at 6:35 AM, Dave Lugo <dlugo@???> wrote:
>>> I seem to have some apps that are sending with a underscore in
>>> the domain part. Searching the exim-user archives suggests that
>>> I can work around this by rewriting the MAIL FROM address,
>>> replacing the domain part _ chars with . chars.
>> I decided to try to be simple - any MAIL FROM with a domain part
>> ending in example.com, that is preceeded by an element containing
>> an underscore, gets replaced with example.com.
>
> That's not what your regex has below. Let's analyze it.
>
>> user@???_asd_asd.example.com ---> user@???
>> But trying to go with this:
>> \N^(.*)@*_*.example.com(.*)$\N $1@???$4 SF
>
> Wrapping the regex with \N is good. That means you don't have to do
> do all kinds of ugly escaping.
>
> What is messing you up is the @*_*. That literally means "zero or
> more @ signs followed by zero or more _ signs". What you meant was
> "@.*_.*\.example.com". You were thinking shell style or sendmail
> style wildcard instead of regex.
>
> Second, you said "with a domain part ending in example.com". But your
> regex searches for "example.com(.*). That means that example.com
> could match anywhere in the hostname.
>
> Finally, drop the $4 from the rewrite part.
>
> CentOS56[root@ivwm51 ~]# grep example.com /etc/exim/exim_TEST.conf
> \N^(.*)@.*_.*.example.com.*$\N $1@??? SF
> CentOS56[root@ivwm51 ~]# exim -C /etc/exim/exim_TEST.conf -brw
> user@???_asd_asd.example.com
> SMTP: user@???
>
that works great for -brw, but when wrapped in <>, it fails:
mail from:<user@a_sd.asd_asdasd.example.com>
LOG: Rewrite of <user@a_sd.asd_asdasd.example.com> yielded unparseable
address: '>' missing at end of address in address <user@???
LOG: SMTP syntax error in "mail from:<user@a_sd.asd_asdasd.example.com>"
H=localhost (ad) [127.0.0.1] malformed address:
_sd.asd_asdasd.example.com> may not follow <user@a
501 <user@a_sd.asd_asdasd.example.com>: malformed address:
_sd.asd_asdasd.example.com> may not follow <user@a
I can't unfortunately guarantee that clients will do the right
thing, or not, with regards to < > usage.
Can both cases be done in the same rewrite rule? Should I use
two rewrite rules instead?
Thanks,
Dave
--
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Dave Lugo dlugo@??? No spam, thanks.
Are you the police? . . . No ma'am, we're sysadmins.
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