New Draytek Vigor 2912 blocking accessing to smtp.gmail.com

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CaffeineFixx

26 posts

Geek

#198638 17-Jul-2016 14:06

Hi folks,

I help out my brother-in-law with his small business network needs as I am able - but have come up against something I can't diagnose. Would be very grateful if fellow geeks could provide suggestions.

Set up:

Windows 2008 domain - DHCP and DNS on the server.

3 computers - all DCHP clients

1 Sharp networked printer (MX-2319U) - fixed IP (192.168.1.200), DNS pointing at server

Internet access is via Linksys WAG220G. This unit configured purely as modem - is forwarding to downstream router as DMZ.

Router WAS old SnapGear VPN server - but was becoming increasingly temperamental and replacement has been purchased.

Router IS new Draytek Vigor 2912. I have tried to configure this device so that it can simply be slotted in as a direct replacement for the SnapGear.

With the Draytek in place, all network functionality appears to work as expected - bar one thing. The printer is configured for 'scan to email' and this is broken. From the (web) configuration of the printer, when I run an SMTP connectivity test, I receive a 3332 Error (Connection to SMTP server test failed).

Tests performed:

From the server (DC), and from a workstation, I can ping and tracert to smtp.gmail.com without issue.

Swap back in the older SnapGear unit and scan-to-email works without issue.

Thought perhaps new router settings upsetting printer's DNS 'view' - so have used 173.194.72.108 as SMTP server setting in printer config. But still receiving 3332 error.

I thought that I wouldn't have to specifically open any outbound ports on the Draytek to allow the port 587 traffic out - but tried this to no avail.

Screenshot of printer config screen is here.

Would be very grateful for any ideas/suggestions on what I might be able to try to get this working.

Thanks in advance.

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richms

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#1594052 17-Jul-2016 16:55

Can the printer get other internet connectivity ok? Sometimes the IP stacks on those things are not the best. I have had embedded devices not do any arp aging so if you changed the router over it might still be trying for the mac address of the old router and failing. I would have expected that a power cycle would have cleared the arp table out so probably not the issue, but really you need to get something on there that you can dump the traffic and see if the printer is even trying to get to google or just doing nothing and then throwing up that error.

Richard rich.ms

CaffeineFixx

26 posts

Geek

#1594194 17-Jul-2016 21:23

Thanks Richms - you put me on the right track fix.

But definitely was one of these moments:

Probably fixed the actual problem early on - and no doubt it was probably a simply mistake too....

But the main issue was me tinkering with the printer settings and I set (or reset in this case) the default gateway to the wrong IP address while troubleshooting. Then spent time chasing my tail looking elsewhere for the problem.

Such a rookie mistake and kicking myself for wasting not only a bunch of my time also your valuable time too. Still I very much appreciate your input because it did cause me to get back to basics.

Thanks to you both.