I am hosting my site on HostGator. The problem is that I can not receive e-mails from some domains.Here is the SMTP transaction response received:H=(sv2.elanceonline.com) [162.242.179.29]:38251 I=[192.185.51.218]:25 F=<bounce@svbounce.elanceonline.com> temporarily rejected RCPTH=(sv2.elanceonline.com) I=[192.185.51.218]:25 sender verify defer for <bounce@svbounce.elanceonline.com>: host lookup did not completeUnable to resolve svbounce.elanceonlineThe support person at HostGator insisted that the problem is on domain-side, but I am very sure it is on HostGator's side because I never had any such problems before using HostGator, and now in the course of 2 days I'm having the same problem with 2 different senders. I can receive from both domain's emails to Gmail at the same time without any problem, but once I type myemail@mydomain.com (mydomain.com is hosted on HostGator) I cannot receive e-mail.What could be reasons for not being able to resolve svbounce.elanceonline or other domains? Should I trust HostGator and believe them that it's not a problem on their side?
Mailserver at my hosting company is unable to resolve certain domains
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