E-mail server (dns) issue


Vivacious Visitor
Mar 3, 2016

I am recieving e-mail but my mail server is bouncing it because there is a dns configuration error.

The e-mail from undertow comes from a mail server that introduces itself in the EHLO with sys.gamemodzone.com.
The A record for sys.gamemodzone.com points to, but the reverse record of is www.superonlineshop.com.br.
And www.superonlineshop.com.br does not have an A record. So this leads to rejections due to RFC compliances.
I see that the A and MX record for mail.undertow.club is so maybe you made a typo somewhere?

I could whitelist the sys.gamemodzone.com, this isnt an issue for me, but i can imagine, this brings alot of problems to ppl that do not have control over their e-mail server like i do. Not all mail servers reject mail when the A record does not resolve to the domain that is announced in the EHLO command of the smtp server. So it is a hit and miss.

Its up to you what you do with this, im just letting you know..



Staff member
Apr 16, 2012
Thanks for the notification. I'll alert the site administrator ( detritus detritus ).
Very respectfully,
fleet (global moderator)
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