Am 2015-02-05 14:50, schrieb Микаел Бак:
Hi there,

On 02/04/2015 11:06 PM, li...@rhsoft.net wrote:

the truth is that a xx.xx.xx.xx-static-dsl.isp.tld is not a mailserver
just becaus eit contains the word "static" - in fact most of them are
ordinary office dsl lines with clients behind


True. Not nessassarily a mail server, but it could be.

In Hungary a business line from one of the largest ISPs gives PTR like
this: dslXXXXXXXX.fixip.t-online.hu

(XXXXXXXX is actualy some rendom hex number).
The ISP does not provide a way to change this PTR.

This is not true. Some examples of changed PTRs of mail servers:

inetnum:        31.46.41.0 - 31.46.43.255
netname:        MT-BROADBAND-STATIC-DSL
descr:          Magyar Telekom customers using static IP
descr:          DSL access

31.46.43.106            # mail.mobilaudio.hu
31.46.43.204            # mail.rf-hobby.hu
31.46.43.227            # mail.m6-duna.hu

inetnum:        81.182.246.0 - 81.182.254.255
netname:        MT-BROADBAND-STATIC-DSL
descr:          Magyar Telekom customers using static IP
descr:          DSL access

81.182.249.53           # mail.prosperitasalap.hu
81.182.249.61           # mail.beta-roll.hu
81.182.249.74           # mail.szilcoop.hu

inetnum:        84.1.118.0 - 84.1.119.255
netname:        MT-BROADBAND-STATIC-KTV
descr:          Magyar Telekom customers using static IP
descr:          CATV access

84.1.119.62             # mail.portos.hu
84.1.119.70             # mail.rktech.hu
84.1.119.130            # mail2.zephron.hu

inetnum:        195.228.226.0 - 195.228.232.255
netname:        MT-BROADBAND-STATIC-DSL
descr:          Magyar Telekom customers using static IP
descr:          DSL access
c
195.228.229.88          # mail.zala-cerealia.hu
195.228.229.132         # mail.hajduszob.hu
195.228.229.166         # mail.valton.hu

--
Michael

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