[wplug] mailman & postfix

[Brian A. Seklecki]

On Fri, 1 Dec 2006, Matthew T. Engel wrote:

> Dec  1 10:17:56 mailman_host postfix/smtp[16132]: 4C88060350:
> to=<mtengel at andrew.cmu.edu>,
> relay=DOMAIN_MAILSERVER.domain.com[xxx.xxx.xxx.xxx]:25, delay=5.1,
> delays=0.01/0.02 /5/0.06, dsn=5.1.8, status=bounced (host
> DOMAIN_MAILSERVER.domain.com[xxx.xxx.xxx.xxx]:said: 553 5.1.8
> <systems-bounces at mailman_host.domain.com>... Domain of sender address
> systems-bounces at mailman_host.domain.com does not exist (in reply to MAIL
> FROM c
> ommand))

I guess the first question I would have is:

*) Does the box/postfix use libresolv resolver(3) or does it do its own
    internal queries.

*) Does your system use some Solaris-like nscd(8) name service cache
    daemon

*) Can postfix to be configured to exec libexec/smtp processes as
    arguments to ktrace/strace so that you can trace gethostbyaddr(3)
    calls.

*) Does tcpdump -n "port domain" even show DNS queries happening

*) unterminated quote somewhere?

~BAS

>
>> From various boxes I am able to do successful:
>  host -t A mailman_host.domain.com
>  host -t MX mailman_host.domain.com
> dig mailman_host.domain.com
>  dig MX a mailman_host.domain.com
>