> On Nov 30, 2017, at 2:00 PM, Chris <cpoll...@embarqmail.com> wrote:
>
> Nov 30 11:00:05 localhost postfix/smtp[32261]: A3CEA1000BDA: to=<cpollo
> c...@embarqmail.com>, relay=smtp.embarqmail.com[206.152.134.66]:587,
> delay=0.93, delays=0.58/0.25/0.11/0, dsn=4.3.4, status=deferred (host
> smtp.embarqmail.com[206.152.134.66] refused to talk to me: 421 4.3.4
> allocated resources exceeded)
Are you sure that you're configured to use the right smarthost?
I see exactly the same symptoms:
$ posttls-finger -lmay "[smtp.embarqmail.com]:587"
posttls-finger: Connected to smtp.embarqmail.com[206.152.134.66]:587
posttls-finger: < 421 4.3.4 allocated resources exceeded
posttls-finger: SMTP service not available: 421 4.3.4 allocated resources
exceeded
It sure looks like [smtp.embarqmail.com]:587 is not in service, or is
down much of the time. The MX host for embarqmail.com is mx.centurylink.net
and that's working just fine (on port 25). So when others send you email,
it is to port 25 "embarqmail.com" (with MX lookups) and not to port 587
"smtp.embarqmail.com".
--
Viktor.
