Solved All 3CX mails blocked by Telekom

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Tm99

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Hi guys,

I successfully configured the fax server at a customer but no mails with the fax were received. I checked the spam filter settings and added [email protected] to the whitelist. Unfortunately no fax mails can be received and I also checked the welcome mails and they seem to be blocked too. The customer's homepage and mails are all hosted at Telekom and there is no further configuration I can do. At the moment I added an other external mal address that is automatically forwarded to the default address of the customer and faxes can be received. But this is just a workaround and definitely more people with Telekom hosting will have this problem, too. Hopefully you can check why 3CX is on a blacklist at Telekom.

Cheers,
Timo
 
@Tm99 can you PM me please the email domain that has the issue ?
I will check and find out what caused this.
 
@Tm99 any feedback please ?
 
@Tm99 as per private conversation last night and as proven issue was coming from the mail provider who was sending back to us REASON554.
As discussed please check this with your mail provider.
 
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