Richard G
Verified User
Oke this is happening since a longer time, but did not have an issue with it before.
Lots of people (like me too) are sending mail via their email domain with an email client.
In my case I have domain company.nl and internet provider Ziggo.nl. I can't use port 25, which is limited to the smtp of Ziggo.
But I want email to be seen as coming from my domain.
So I send mail from [email protected] to [email protected] via the smtp server of my dedicated server where my domain resides so smtp.hostingserver.nl via port 587 to be able to send it.
Now with loads of internet providers, the dynamic ip ranges for their customers are listed in spamhaus, like Ziggo too.
This should be no problem as not the delivering system to [email protected] is in fact smtp.hostingserver.nl which also has a dedicated ip and rDNS, no issue there.
Nevertheless in some cases it seems to happen that RBL's or spamfilters are looking to the original helo name instead of from the delivering system.
So they also see the helo mypc1 which delivered the mail to my smtp server and so flags the mail as being listed on spamhaus. For example Mailwasher Pro does this too.
This can give issues as sometimes this legitimate email is seen as spam while it isn't.
Is this an issue we have to live with? Or can something be done to prevent this? As users should be able to send their mail via their domain on the hosting server without problems, correct?
Lots of people (like me too) are sending mail via their email domain with an email client.
In my case I have domain company.nl and internet provider Ziggo.nl. I can't use port 25, which is limited to the smtp of Ziggo.
But I want email to be seen as coming from my domain.
So I send mail from [email protected] to [email protected] via the smtp server of my dedicated server where my domain resides so smtp.hostingserver.nl via port 587 to be able to send it.
Now with loads of internet providers, the dynamic ip ranges for their customers are listed in spamhaus, like Ziggo too.
This should be no problem as not the delivering system to [email protected] is in fact smtp.hostingserver.nl which also has a dedicated ip and rDNS, no issue there.
Nevertheless in some cases it seems to happen that RBL's or spamfilters are looking to the original helo name instead of from the delivering system.
So they also see the helo mypc1 which delivered the mail to my smtp server and so flags the mail as being listed on spamhaus. For example Mailwasher Pro does this too.
This can give issues as sometimes this legitimate email is seen as spam while it isn't.
Is this an issue we have to live with? Or can something be done to prevent this? As users should be able to send their mail via their domain on the hosting server without problems, correct?