Re: [mailop] Meta outgoing servers in black list (SORBS, 0SPAM...)

2024-02-01 Thread John Levine via mailop
It appears that Renaud Allard via mailop  said:
>-=-=-=-=-=-
>-=-=-=-=-=-
>
>
>
>On 2/1/24 10:32, Eduardo Díaz Comellas via mailop wrote:
>> Hi,
>> 
>> I've got a customer complaining that they don't receive emails from Meta 
>> for password reset. We have tracked down this to see that a lot of this 
>> servers are blacklisted in popular blacklists.
>
>Let's face it, if you are using 0spam, ascams or SORBS to deny mails 
>based only on these lists, you are losing legitimate mails. Those 
>blacklists should only be used in a scoring system.

What he said.  I only see them in SORBS which has a rather wild'n'crazy listing 
policy.

R's,
John
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Re: [mailop] Meta outgoing servers in black list (SORBS, 0SPAM...)

2024-02-01 Thread Michael via mailop
It would be helpful if Meta used a better PTR naming convention for 
these servers.. ;)


host 66.220.155.136
136.155.220.66.in-addr.arpa domain name pointer 
66-220-155-136.mail-mail.facebook.com.


Not sure who dreamed up that one..

On 2/1/24 02:18, Philip Paeps via mailop wrote:

On 2024-02-01 17:32:14 (+0800), Eduardo Díaz Comellas via mailop wrote:
I've got a customer complaining that they doan't receive emails from 
Meta for password reset. We have tracked down this to see that a lot 
of this servers are blacklisted in popular blacklists.


[...]

I usually don't care when the sender is blacklisted, as our policy is 
that the sender has to deal with their own problems, but this 
particular customer has a point.


I think "don't care: it's the sender's problem" is a sound policy.

I temper and denylists I use with allowlists.  DNSWL is a popular one. 
Abusix has a good one too.  There are others.


Check https://multirbl.valli.org


Btw, how do you deal with this big players' blacklist problems?


The same way I deal with other players.

Philip



--
"Catch the Magic of Linux..."

Michael Peddemors, President/CEO LinuxMagic Inc.
Visit us at http://www.linuxmagic.com @linuxmagic

A Wizard IT Company - For More Info http://www.wizard.ca
"LinuxMagic" is a Registered TradeMark of Wizard Tower TechnoServices Ltd.

604-682-0300 Beautiful British Columbia, Canada
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Re: [mailop] Meta outgoing servers in black list (SORBS, 0SPAM...)

2024-02-01 Thread Philip Paeps via mailop

On 2024-02-01 17:32:14 (+0800), Eduardo Díaz Comellas via mailop wrote:
I've got a customer complaining that they don't receive emails from 
Meta for password reset. We have tracked down this to see that a lot 
of this servers are blacklisted in popular blacklists.


[...]

I usually don't care when the sender is blacklisted, as our policy is 
that the sender has to deal with their own problems, but this 
particular customer has a point.


I think "don't care: it's the sender's problem" is a sound policy.

I temper and denylists I use with allowlists.  DNSWL is a popular one.  
Abusix has a good one too.  There are others.


Check https://multirbl.valli.org


Btw, how do you deal with this big players' blacklist problems?


The same way I deal with other players.

Philip

--
Philip Paeps
Senior Reality Engineer
Alternative Enterprises
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Re: [mailop] Meta outgoing servers in black list (SORBS, 0SPAM...)

2024-02-01 Thread Renaud Allard via mailop



On 2/1/24 10:32, Eduardo Díaz Comellas via mailop wrote:

Hi,

I've got a customer complaining that they don't receive emails from Meta 
for password reset. We have tracked down this to see that a lot of this 
servers are blacklisted in popular blacklists.




Let's face it, if you are using 0spam, ascams or SORBS to deny mails 
based only on these lists, you are losing legitimate mails. Those 
blacklists should only be used in a scoring system.


smime.p7s
Description: S/MIME Cryptographic Signature
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Re: [mailop] Meta outgoing servers in black list (SORBS, 0SPAM...)

2024-02-01 Thread Peter N. M. Hansteen via mailop
On Thu, Feb 01, 2024 at 10:32:14AM +0100, Eduardo Díaz Comellas via mailop 
wrote:
> 
> Btw, how do you deal with this big players' blacklist problems?

One (possibly naive) option is to extract from SPF the outbound MXes for 
domains you want to receive mail from, 
such as what I describe in 
https://www.nxdomain.no/~peter/goodness_enumerated_by_robots.html (or if you 
prefer
nicer formatting at the cost of *all* the trackers G has for you 
https://bsdly.blogspot.com/2018/11/goodness-enumerated-by-robots-or.html)

- Peter

-- 
Peter N. M. Hansteen, member of the first RFC 1149 implementation team
https://bsdly.blogspot.com/ https://www.bsdly.net/ https://www.nuug.no/
"Remember to set the evil bit on all malicious network traffic"
delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.
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[mailop] Meta outgoing servers in black list (SORBS, 0SPAM...)

2024-02-01 Thread Eduardo Díaz Comellas via mailop
Hi,

I've got a customer complaining that they don't receive emails from Meta for 
password reset. We have tracked down this to see that a lot of this servers are 
blacklisted in popular blacklists.

A small subset of blacklisted addresses are:

66.220.155.136
66.220.155.140
66.220.155.142
66.220.155.143
66.220.155.145
66.220.155.147
66.220.155.148
66.220.155.151
66.220.155.152
66.220.155.153
66.220.155.155
66.220.155.156
66.220.155.157
66.220.155.158
69.171.232.129
69.171.232.131
69.171.232.132
69.171.232.134
69.171.232.135
69.171.232.136
69.171.232.137

Is anyone from Meta reading this? I usually don't care when the sender is 
blacklisted, as our policy is that the sender has to deal with their own 
problems, but this particular customer has a point. 

Btw, how do you deal with this big players' blacklist problems?

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