[swinog] mail problems - port 25 on swisscom dsl

hi customers phoned me that they could not send emails anymore. needed to switch to port 587. now heard from others that swisscom is blocking port 25 ??? what the heck is going on ? - Thomas ___ swinog mailing list swinog@lists.swinog.ch

Re: [swinog] mail problems - port 25 on swisscom dsl (works fine for at least me though)

Thomas Mueller wrote: hi customers phoned me that they could not send emails anymore. needed to switch to port 587. Maybe there is something filtering between you and them. They should be using port 587 anyway which is supposed to be the submission port. Unless they are running a fullblown

Re: [swinog] mail problems - port 25 on swisscom dsl

[mailto:swinog-boun...@lists.swinog.ch] On Behalf Of Thomas Mueller Sent: Wednesday, March 03, 2010 1:15 PM To: swi...@swinog.ch Subject: [swinog] mail problems - port 25 on swisscom dsl hi customers phoned me that they could not send emails anymore. needed to switch to port 587. now

Re: [swinog] mail problems - port 25 on swisscom dsl (works fine for at least me though)

Am Wed, 03 Mar 2010 13:26:26 +0100 schrieb Jeroen Massar: Thomas Mueller wrote: hi customers phoned me that they could not send emails anymore. needed to switch to port 587. Maybe there is something filtering between you and them. They should be using port 587 anyway which is supposed

Re: [swinog] mail problems - port 25 on swisscom dsl

steven.glog...@swisscom.com wrote: did they phoned to the hotline? no maybe they sent spam or so and port 25 has been blocked in order to force the customer to use 587? is there any error message giving more information about problems on the customer side? there was a message: 573 573

Re: [swinog] mail problems - port 25 on swisscom dsl

Am Mittwoch, den 03.03.2010, 13:40 +0100 schrieb steven.glog...@swisscom.com: did they phoned to the hotline? maybe they sent spam or so and port 25 has been blocked in order to force the customer to use 587? is there any error message giving more information about problems on the customer

Re: [swinog] mail problems - port 25 on swisscom dsl (works fine for at least me though)

steven.glog...@swisscom.com wrote: well, actually.. it seems someone from us confirmed it in the comments of http://blog.neocid.li/?p=105 ... -steven well, i'm asking me why swisscom is not able to not filter traffic not going to servers from swisscom. - Thomas

Re: [swinog] mail problems - port 25 on swisscom dsl (works fine for at least me though)

steven.glog...@swisscom.com wrote: well, actually.. it seems someone from us confirmed it in the comments of http://blog.neocid.li/?p=105 ... Quite interesting read. As that states, if I understand correctly, that per-default one gets into the group where outbound mail to non-swisscom

Re: [swinog] mail problems - port 25 on swisscom dsl (works fine for at least me though)

- It is not documented anywhere on the Swisscom side - It was not communicated to customers - It does not account for people doing TLS, which would make the connection crypted - More importantly: it sets a very dangerous precedent that Swisscom is hijacking connections. You should as

Re: [swinog] mail problems - port 25 on swisscom dsl (works fine for at least me though)

Thomas Mangin wrote: - It is not documented anywhere on the Swisscom side - It was not communicated to customers - It does not account for people doing TLS, which would make the connection crypted - More importantly: it sets a very dangerous precedent that Swisscom is hijacking