Topic: sending email slow to one particular domain

[scree74]

Good afternoon

I am having an issue with sending email to a specific domain
it showing the following line in the Mail Host Analysis

sbytes      mess  tries      xdelay         host
13487510 37     1157     22825.82     Someones-domain.co.uk (this is the not the real domain)

How can I trouble shoot where the problem is any assistance would be much appreciated.

Thank you in advance
Scott

[gzartman]

Have a look at the log files:

/var/log/qpsmtp/current
/var/log/qmail/current

[CharlieBrady]

Have a look at the log files:

/var/log/qpsmtp/current
/var/log/qmail/current

Also look at the maillog analysis option in the server-manager.

You would probably get quicker diagnosis of the problem if you just named the domain. The problem is likely to be with their DNS or mail server setup.

[purvis]

If you have not pinged the site and if the site will return a ping.
I would try pinging the site.
I have seen too much internet supplier issues lately myself.

[mmccarn]

Is the problem that the domain looks funny in the qmail log report, or is the problem that you have users at Someones-domain.co.uk complaining that email doesn't arrive for hours after you send it?

If the problem is the number reported in the log, this is likely a log-related issue.  Perhaps their mailserver uses greylisting, and refuses all email until re-submitted.  Perhaps their mailserver returns a soft decline for all non-existing mailboxes, and your server keeps trying to deliver messages to departed users at Someones-domain.co.uk for a couple days, skewing the reported numbers.

If the problem is with delivering email to a specific user at Someones-domain.co.uk, get them to send you back one of the delayed emails *as an attachment* so you can look at the headers in the message to see where the delay was introduced.