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All; I installed sendmail via yum, but if I test it like this: echo "Subject: sendmail test" | sendmail sbob at quadratum-braccas.com I get a local mail on the server with this every time: Message? 1: From MAILER-DAEMON at kdb-bugs.example.com? Sun Apr 19 10:15:00 2020 Return-Path: <MAILER-DAEMON at kdb-bugs.example.com> Date: Sun, 19 Apr 2020 10:15:00 -0600 From: Mail Delivery Subsystem <MAILER-DAEMON at kdb-bug...

...sendmail via yum, but if I test it like this: >> >> > >> The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 >> from localhost [127.0.0.1] >> >> ??? ----- The following addresses had permanent fatal errors ----- >> <sbob at quadratum-braccas.com> >> ???? (reason: 554 5.7.1 Service unavailable; Client host >> [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; >> https://www.spamhaus >> .org/query/ip/50.243.150.81) > > Is 50.243.150.81 your system's IP address?? If so, as this shows, that &g...

> Date: Sunday, April 19, 2020 13:47:32 -0600 > From: "S.Bob" <sbob at quadratum-braccas.com> > > my relay will be smtp.fastmail.com and it requires authentication > and SSL, are there added settings in main.cf that will allow this? What port is that delivering to -- that doesn't sound like port 25, which is the default that an MTA delivers to. The postfix list may be...

> On Apr 19, 2020, at 3:47 PM, S.Bob <sbob at quadratum-braccas.com> wrote: > > my relay will be smtp.fastmail.com <http://smtp.fastmail.com/> and it requires authentication and SSL, are there added settings in main.cf that will allow this? Yes. You?ll want to use your favorite search engine to look up "centos postfix relayhost sasl?. Ig...

...t;>> > >> > >>> The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 > >>> from localhost [127.0.0.1] > >>> > >>> ----- The following addresses had permanent fatal errors ----- > >>> <sbob at quadratum-braccas.com> > >>> (reason: 554 5.7.1 Service unavailable; Client host > >>> [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; > >>> https://www.spamhaus > >>> .org/query/ip/50.243.150.81) > >> > >> Is 50.243.150.81 your syst...

...r me, interested? KNow of someone? On 4/19/20 12:18 PM, Alexander Dalloz wrote: > Am 19.04.2020 um 18:28 schrieb S.Bob: >> >> I installed sendmail via yum, but if I test it like this: >> >> >> echo "Subject: sendmail test" | sendmail sbob at quadratum-braccas.com >> >> >> I get a local mail on the server with this every time: > > [? ... ] > > Hi, > > your provided sendmail.mc shows that you have done zero customization. > So please let me ask: do you have experience to setup and operate an > MTA and especially...

...s received at Sun, 19 Apr 2020 10:02:56 -0600 > >>>>>>> from localhost [127.0.0.1] > >>>>>>> > >>>>>>> ----- The following addresses had permanent fatal errors ----- > >>>>>>> <sbob at quadratum-braccas.com> > >>>>>>> (reason: 554 5.7.1 Service unavailable; Client host > >>>>>>> [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; > >>>>>>> https://www.spamhaus > >>>>>>> .org/query/ip/50....

...;>> The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 > >>>>> from localhost [127.0.0.1] > >>>>> > >>>>> ----- The following addresses had permanent fatal errors ----- > >>>>> <sbob at quadratum-braccas.com> > >>>>> (reason: 554 5.7.1 Service unavailable; Client host > >>>>> [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; > >>>>> https://www.spamhaus > >>>>> .org/query/ip/50.243.150.81) > >>>>...

...> > > I installed sendmail via yum, but if I test it like this: > > > The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 > from localhost [127.0.0.1] > > ?? ----- The following addresses had permanent fatal errors ----- > <sbob at quadratum-braccas.com> > ??? (reason: 554 5.7.1 Service unavailable; Client host [50.243.150.81] > blocked using xbl.spamhaus.org.rbl.local; https://www.spamhaus > .org/query/ip/50.243.150.81) Is 50.243.150.81 your system's IP address? If so, as this shows, that IP is on spamhaus' blacklist...

Am 19.04.2020 um 18:28 schrieb S.Bob: > > I installed sendmail via yum, but if I test it like this: > > > echo "Subject: sendmail test" | sendmail sbob at quadratum-braccas.com > > > I get a local mail on the server with this every time: [ ... ] Hi, your provided sendmail.mc shows that you have done zero customization. So please let me ask: do you have experience to setup and operate an MTA and especially Sendmail? I am asking because that's not...

...s received at Sun, 19 Apr 2020 10:02:56 -0600 > >>>>>>> from localhost [127.0.0.1] > >>>>>>> > >>>>>>> ----- The following addresses had permanent fatal errors ----- > >>>>>>> <sbob at quadratum-braccas.com> > >>>>>>> (reason: 554 5.7.1 Service unavailable; Client host > >>>>>>> [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; > >>>>>>> https://www.spamhaus > >>>>>>> .org/query/ip/50....

...>> >>>>> The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 >>>>> from localhost [127.0.0.1] >>>>> >>>>> ----- The following addresses had permanent fatal errors ----- >>>>> <sbob at quadratum-braccas.com> >>>>> (reason: 554 5.7.1 Service unavailable; Client host >>>>> [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; >>>>> https://www.spamhaus >>>>> .org/query/ip/50.243.150.81) >>>> Is 50.243.150.81 your sy...

...original message was received at Sun, 19 Apr 2020 10:02:56 -0600 >>>>>>> from localhost [127.0.0.1] >>>>>>> >>>>>>> ----- The following addresses had permanent fatal errors ----- >>>>>>> <sbob at quadratum-braccas.com> >>>>>>> (reason: 554 5.7.1 Service unavailable; Client host >>>>>>> [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; >>>>>>> https://www.spamhaus >>>>>>> .org/query/ip/50.243.150.81) >>...

...original message was received at Sun, 19 Apr 2020 10:02:56 -0600 >>>>>>> from localhost [127.0.0.1] >>>>>>> >>>>>>> ----- The following addresses had permanent fatal errors ----- >>>>>>> <sbob at quadratum-braccas.com> >>>>>>> (reason: 554 5.7.1 Service unavailable; Client host >>>>>>> [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; >>>>>>> https://www.spamhaus >>>>>>> .org/query/ip/50.243.150.81) >>...

...Sun, 19 Apr 2020 10:02:56 -0600 >>>>>>>>> from localhost [127.0.0.1] >>>>>>>>> >>>>>>>>> ----- The following addresses had permanent fatal errors ----- >>>>>>>>> <sbob at quadratum-braccas.com> >>>>>>>>> (reason: 554 5.7.1 Service unavailable; Client host >>>>>>>>> [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; >>>>>>>>> https://www.spamhaus >>>>>>>>> .org...

I can ssh -X myuser at theremote-mac but I cannot run /usr/bin/firefox. I can run "open -a Firefox" on the mac but then it just opens firefox on the mac Thoughts? On 11/11/20 3:45 PM, R C wrote: > I do it all the time. > > > make sure you forward X11,? on the? ssh server side,? and login with? > ssh -X me at myhost.whatever > > start firefox with: > >

Hi all; I'm trying to setup an ssh tunnel so I can run firefox on a remote laptop and have the display locally. I have 2 laptops local = CentOS 7 remote = mac OSX 10.15.7 I want to create an ssh tunnel on the local CentOS 7 laptop, then run firefox on the mac with the display showing up on the CentOS laptop. Is this doable? Thanks in advance

On 11/12/20 7:50 AM, Jonathan Billings wrote: > On Thu, Nov 12, 2020 at 12:56:15PM +0000, Bernstein, Noam CIV USN NRL (6393) Washington DC (USA) via CentOS wrote: >> If the point is to access a specific web site only the remote >> machine can get to, you can also do it with port forwarding: >> ssh -L 8000:ip_of_web_site_to_access_from_remote:443 remote_machine >> and