> Your real problem is however your IP reputation. If you're sending
> unsolicited email, or you have relay customers sending unsolicited mail,
> then your difficulties delivering it are a desirable feature of
> Microsoft's email service. If you're sending email outlook.com
> customers want, then
The situation with outlook got much worse in our overnight runs. We
transferred 7K subscriber emails to relays ending in outlook.com and
saw the following feedback in our logs:
MaxConnections: 83, Connection: 1386, RateLimited: 6392
where the following regexp is used in our log post-processor:
On 31 Jul 2020, at 14:18, John Regan wrote:
> This mail server has an SPF record for itself, but no DKIM or DMARC. It also
> has a working reverse DNS. Mail is received by this system from two postfix
> relays protected with spamassassin and monitored closely.
Yahoo doesn’t care, and IME will r
Hi,
I have a postfix-3.4.10 system being used as a relay for a subdomain where
most users are forwarding their mail through it instead of sending and
receiving email on it directly using a ~/.forward file and procmail.
Users can send and receive mail using their desktop email client connected
thro
Viktor Dukhovni:
> On Fri, Jul 31, 2020 at 02:16:54PM -0400, Wietse Venema wrote:
>
> > Logged as conn_use=xxx. By default, reuse happens only for plaintext
> > connections.
> >
> > > >smtp_tls_connection_reuse=yes
> >
> > Logged as TLS handshake results plus conn_use=xxx.
>
> One thing we
On Fri, Jul 31, 2020 at 02:16:54PM -0400, Wietse Venema wrote:
> Logged as conn_use=xxx. By default, reuse happens only for plaintext
> connections.
>
> > >smtp_tls_connection_reuse=yes
>
> Logged as TLS handshake results plus conn_use=xxx.
One thing we could likely improve in TLS connectio
@lbutlr:
> On 30 Jul 2020, at 12:53, Wietse Venema wrote:
> > main.cf:
> >smtp_connection_cache_on_demand=yes
Logged as conn_use=xxx. By default, reuse happens only for plaintext
connections.
> >smtp_tls_connection_reuse=yes
Logged as TLS handshake results plus conn_use=xxx.
Wi
On Fri, Jul 31, 2020 at 11:47:57AM -0600, @lbutlr wrote:
> On 30 Jul 2020, at 12:53, Wietse Venema wrote:
> > main.cf:
> >smtp_connection_cache_on_demand=yes
> >smtp_tls_connection_reuse=yes
>
> Do these setting show up in anyway int he logs (that is, does the log look
> any different if
On 30 Jul 2020, at 12:53, Wietse Venema wrote:
> main.cf:
>smtp_connection_cache_on_demand=yes
>smtp_tls_connection_reuse=yes
Do these setting show up in anyway int he logs (that is, does the log look any
different if a TLS connection is reused or a connection is using
cache_on_demand.
Greg Sims:
> The situation with outlook got much worse in our overnight runs. We
> transferred 7K subscriber emails to relays ending in outlook.com and
> saw the following feedback in our logs:
>
> MaxConnections: 83, Connection: 1386, RateLimited: 6392
>
> where the following regexp is used in
On Fri, Jul 31, 2020 at 09:37:12AM -0700, Greg Sims wrote:
> RateLimited -- "^.*The mail server .* has been temporarily rate
> limited due to IP reputation.*$"
There's your problem. You need a better IP reputation.
> (1) smtpd_tls_security_level = none & smtp_tls_security_level = none
> in mai
Viktor Dukhovni:
> > On Jul 31, 2020, at 12:33 PM, Wietse Venema wrote:
> >
> >> No, you *do not* want to do that. That can increase connection
> >> concurrency beyond your process limit, in the form of idle connections
> >> that have a different nexthop than the one to which you're currently
> >
> On Jul 31, 2020, at 12:33 PM, Wietse Venema wrote:
>
>> No, you *do not* want to do that. That can increase connection
>> concurrency beyond your process limit, in the form of idle connections
>> that have a different nexthop than the one to which you're currently
>> delivering email.
>
> We
Viktor Dukhovni:
> > We would like to use Per-Destination Connection Caching to increase
> > our throughput for "outlook:".
>
> No, you *do not* want to do that. That can increase connection
> concurrency beyond your process limit, in the form of idle connections
> that have a different nexthop t
> > We would like to use Per-Destination Connection Caching to increase
> > our throughput for "outlook:".
>
> No, you *do not* want to do that. That can increase connection
> concurrency beyond your process limit, in the form of idle connections
> that have a different nexthop than the one to whi
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