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Can’t send mails (SMTP problem)

Most of the ISP’s in Thailand started to block the outgoing mail server Port 25.

Ask your hosting company if they provide you a alternative Port (f.e. 587, 2525) and than usually everything is working fine again.

Lemonsurf / Phuket Hosting customers: please contact us and we will give you the right data to use your own SMTP server.

Here a list of SMTP servers which the different ISP’s provide:

Internet Providers in Thailand (ISP’s)

PROVIDER

SMTP SERVER

SUPPORT

HiNet (CAT) mail.cathinet.com
relay.cat.net.th
mail.cat.net.th
Direct Dial: 1322 (TT&T)
02-6141000 (24h)
Ji-Net (MaxNet) net1.ji-net.com
alias:
smtp.tttmaxnet.com
smtp.ji-net.com
02-5023456
Loxinfo mail.loxinfo.co.th 02-2638000
KSC ksc.th.com
smtp.th.com***
totadsl.th.com
02-9797000
Pacific Internet smtp.pacific.net.th
smtp5.totonline.net
Direct Dial: 1142
02-3518855
Internet Thailand mail.inet.co.th 02-2577111
076-379016
True Internet roamai.asianet.co.th
alias:
roam.truemail.co.th
mail.asianet.co.th
02-6411800
TOT smtp.totisp.net Direct Dial: 1100
076-222200
*** –> requires outgoing server authentication