Dear Experts
I have got a client who has a domain called : forum.com.nz (made it up) that is hosted by : APX Company (i.e. not his ISP provider).
Website designed by JDK Company not his hosting not his ISP provider.
Client internet provide is a nationalISP.
Client is using an outlook to retrieve mails for his domain (i.e. forum.com.nz)
POP3 : mail.forum.com.nz
SMTP : smtp.nationalips.com
Before the problem happened I realised there are a lot of spams flooding to his outlook.
All of a sudden the client called me that outgoing email stopped and when I tested his outlook there was an error message for the outgoing messages (not incoming), forgot what was that error.
Checked his public ip against mxtoolbox.com ,,,,,realized that it was blacklisted ,,,it took up to 73 hours to be relisted.
I want to understand the concept behind the problem; the reason for that before the problem of the spam hosting provider (APX company) told website designer company (JDK Company) that their security system caught suspicious codes.
My question if the spam emails are flooding via the hosting provider’s server (APX company) to the client email (my case is outlook),,,, why the outgoing SMTP (public ip address) for the ISP provider got blacklisted ? Is that because that ip address was used for incoming and outgoing emails ? If this is the case why outlook testing showing okay for incoming but not for outgoing ?
Regards
I have got a client who has a domain called : forum.com.nz (made it up) that is hosted by : APX Company (i.e. not his ISP provider).
Website designed by JDK Company not his hosting not his ISP provider.
Client internet provide is a nationalISP.
Client is using an outlook to retrieve mails for his domain (i.e. forum.com.nz)
POP3 : mail.forum.com.nz
SMTP : smtp.nationalips.com
Before the problem happened I realised there are a lot of spams flooding to his outlook.
All of a sudden the client called me that outgoing email stopped and when I tested his outlook there was an error message for the outgoing messages (not incoming), forgot what was that error.
Checked his public ip against mxtoolbox.com ,,,,,realized that it was blacklisted ,,,it took up to 73 hours to be relisted.
I want to understand the concept behind the problem; the reason for that before the problem of the spam hosting provider (APX company) told website designer company (JDK Company) that their security system caught suspicious codes.
My question if the spam emails are flooding via the hosting provider’s server (APX company) to the client email (my case is outlook),,,, why the outgoing SMTP (public ip address) for the ISP provider got blacklisted ? Is that because that ip address was used for incoming and outgoing emails ? If this is the case why outlook testing showing okay for incoming but not for outgoing ?
Regards
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