Mail often not delivered | TurnKey GNU/Linux

Does anyone here know how I can find out what is blocking an email from getting to a host? If I do a simple PHP based mail(to@adress.com) it arrives at my gmail-account, but not on other domains nor to some gmail accounts.

I've installed postfix and spamassasin, could these be blocking anything?

My php.ini setting is the default sendmail -t -i.

My concern now is that many of my forum members (vBulletin) complains that they are not receiving their subscription emails after my migration to new servers (still same ISP and all).

Replies (2)

true that, i was hoping

Reply 1 2009-04-13

true that, i was hoping there was a server fault for this. I see that for my own adress it says "failed to route the address", I do not know what that mean on a "settings level"... is there any way to debug that any furtur with a verbose mailing test?

Take a look in the mail logs

Reply 2 2009-04-13

There are many possible explanations for what you are describing. It could be a spam filter somewhere along the way. Check to see if it reaches the Spam/Junk folder.

Also, check your mail logs in /var/log to see what happens to the mail you are sending. It should tell you whether the mail was received by the other side, or rejected, etc.